6000 Most Used Vocabulary

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Lesson 59 Details

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intervention (noun) vocabulary illustration

interview (noun, verb) vocabulary illustration

intimate (adjective) vocabulary illustration

introduce (verb) vocabulary illustration

invention (noun) vocabulary illustration

investment (noun) vocabulary illustration

irrationality (noun) vocabulary illustration

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Lesson 59 - Mask Toggle

Emoji	Word	Images	Past	Past Participle	Third Person Singular	Gerund	Meaning	Example Sentence	Example Expression	Example Expression Meaning	Synonyms	Antonyms	Collocations

#2809 ⏸️ ••••••	interrupt /ˌɪntəˈrʌpt/ verb ••••••	- ••••••	interrupted ••••••	interrupted ••••••	interrupts ••••••	interrupting ••••••	to stop someone from speaking or doing something by suddenly saying or doing something ••••••	She tried not to interrupt while he was speaking. ••••••	interrupt the flow ••••••	to break the natural course of something ••••••	disturb, hinder, intrude, disrupt, break in ••••••	continue, allow, support ••••••	interrupt the conversation, interrupt the process, rudely interrupt ••••••
#2810 ⏸️ ••••••	interruption /ˌɪntəˈrʌpʃən/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the act of stopping or breaking the continuity of something; a pause caused by an external action ••••••	The meeting was delayed due to an unexpected interruption. ••••••	- ••••••	- ••••••	break, disruption, disturbance, pause, interference ••••••	continuation, flow, continuity ••••••	unexpected interruption, brief interruption, service interruption, constant interruption ••••••
#2811 ⏱️ ••••••	interval /ˈɪntərvəl/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a period of time between two events or points; a pause or break in activity ••••••	There was a short interval between the two performances. ••••••	at regular intervals ••••••	repeatedly at the same time gaps ••••••	gap, break, pause, duration, span ••••••	continuation, flow ••••••	time interval, regular interval, short interval, interval training ••••••
#2812 🛑 ••••••	intervene /ˌɪntərˈviːn/ verb ••••••	- ••••••	intervened ••••••	intervened ••••••	intervenes ••••••	intervening ••••••	To come between people, groups, or events, often to prevent conflict or improve a situation. ••••••	The teacher had to intervene to stop the fight between the students. ••••••	intervene in a dispute ••••••	to get involved in an argument or disagreement to try to resolve it ••••••	mediate, intercede, interfere, step in, arbitrate ••••••	ignore, avoid, neglect ••••••	intervene in conflict, intervene directly, intervene quickly, intervene diplomatically ••••••
#2813 🛑 ••••••	intervention /ˌɪntərˈvɛnʃən/ noun ••••••	••••••	- ••••••	- ••••••	- ••••••	- ••••••	the action of becoming involved in a situation to change it ••••••	Government intervention helped stabilize the economy. ••••••	military intervention ••••••	the use of military force in a conflict ••••••	interference, mediation, involvement, intrusion, action ••••••	noninterference, neglect, inaction ••••••	early intervention, direct intervention, government intervention, timely intervention ••••••
#2814 🎤 ••••••	interview /ˈɪntərvjuː/ noun, verb ••••••	••••••	interviewed ••••••	interviewed ••••••	interviews ••••••	interviewing ••••••	a formal meeting in which one person asks another questions ••••••	She prepared well for the job interview. ••••••	exit interview ••••••	a discussion with an employee leaving a company ••••••	meeting, questioning, discussion, examination, consultation ••••••	silence, monologue ••••••	job interview, phone interview, conduct interview, interview process ••••••
#2815 🌹 ••••••	intimate /ˈɪntɪmət/ adjective ••••••	••••••	- ••••••	- ••••••	- ••••••	- ••••••	Closely acquainted; very familiar and personal. ••••••	They shared an intimate dinner by candlelight. ••••••	intimate knowledge ••••••	A deep or detailed understanding of something. ••••••	close, familiar, personal, confidential, warm ••••••	distant, impersonal, formal ••••••	intimate relationship, intimate knowledge, intimate dinner, intimate friend ••••••
#2816 ➡️ ••••••	into /ˈɪntuː/ preposition ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	expressing movement or direction to the inside of something ••••••	She walked into the room quietly. ••••••	run into ••••••	to meet by chance ••••••	inside, within, toward, onto ••••••	out, outside ••••••	fall into, get into, break into, move into ••••••
#2817 🔥 ••••••	intolerable /ɪnˈtɒlərəbl̩/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	so bad, difficult, or unpleasant that it cannot be endured ••••••	The heat during the summer was almost intolerable. ••••••	an intolerable situation ••••••	a condition or state that is too difficult or unpleasant to continue ••••••	unbearable, insufferable, unendurable, extreme, unacceptable ••••••	tolerable, bearable, acceptable ••••••	intolerable pain, intolerable pressure, intolerable behavior, intolerable burden ••••••
#2818 🤔 ••••••	intriguing /ɪnˈtriːɡɪŋ/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	very interesting and unusual; arousing curiosity ••••••	The movie has an intriguing plot that keeps the audience hooked. ••••••	- ••••••	- ••••••	fascinating, captivating, engaging, compelling, mysterious ••••••	boring, dull, uninteresting ••••••	intriguing idea, intriguing story, intriguing mystery, intriguing character ••••••
#2819 🙋 ••••••	introduce /ˌɪntrəˈduːs/ verb ••••••	••••••	introduced ••••••	introduced ••••••	introduces ••••••	introducing ••••••	to present someone or something to another person or group ••••••	He will introduce his new idea at the meeting. ••••••	introduce a bill ••••••	to formally present a proposed law ••••••	present, announce, propose, launch, establish ••••••	withdraw, remove, eliminate ••••••	introduce yourself, introduce changes, introduce technology, introduce to ••••••
#2820 📘 ••••••	introduction /ˌɪn.trəˈdʌk.ʃən/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the action of introducing something or someone; an opening or beginning part ••••••	The professor gave a brief introduction before starting the lecture. ••••••	introduction to ••••••	the beginning explanation or basic presentation of a subject ••••••	beginning, preface, initiation, presentation, foreword ••••••	conclusion, ending ••••••	make an introduction, give an introduction, introduction to a book, formal introduction ••••••
#2821 ⚔️ ••••••	invade /ɪnˈveɪd/ verb ••••••	- ••••••	invaded ••••••	invaded ••••••	invades ••••••	invading ••••••	to enter a place or country forcefully, especially as an enemy ••••••	The army invaded the neighboring country. ••••••	invade someone's privacy ••••••	to intrude into someone's personal life ••••••	attack, conquer, occupy, overrun, intrude ••••••	withdraw, retreat, leave ••••••	invade territory, invade privacy, invaded country, invading force ••••••
#2822 ❌ ••••••	invalid /ˈɪnvəlɪd/ (adjective), /ɪnˈvælɪd/ (noun) adjective, noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	Not valid; having no force or effect. Also refers to a person too weak or ill to care for themselves. ••••••	The court declared the contract invalid. ••••••	invalid argument ••••••	A reasoning or statement that is not logically correct. ••••••	void, ineffective, worthless, weak, ill ••••••	valid, sound, effective ••••••	invalid contract, invalid data, invalid reason ••••••
#2823 ❌ ••••••	invalidity /ˌɪnvəˈlɪdɪti/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the state of being invalid, legally void, or lacking force or validity ••••••	The court ruled that the contract suffered from invalidity. ••••••	- ••••••	- ••••••	invalidness, nullity, illegitimacy, ineffectiveness, voidness ••••••	validity, legitimacy, soundness ••••••	legal invalidity, claim invalidity, grounds of invalidity, prove invalidity ••••••
#2824 🔒 ••••••	Invariable /ɪnˈveə.ri.ə.bəl/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	never changing; constant; always the same ••••••	His invariable routine includes morning exercise and coffee. ••••••	- ••••••	- ••••••	constant, unchanging, fixed, consistent ••••••	variable, changing, inconsistent, fluctuating ••••••	invariable rule, invariable routine, invariable custom, invariable pattern ••••••
#2825 ⚔️ ••••••	invasion /ɪnˈveɪʒən/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	An instance of invading a country, region, or personal space with armed force or unwelcome presence. ••••••	The army prepared for the possibility of an invasion. ••••••	invasion of privacy ••••••	A violation of someone's personal life without permission. ••••••	attack, incursion, intrusion, assault, raid ••••••	retreat, withdrawal, defense ••••••	military invasion, foreign invasion, invasion force, invasion threat ••••••
#2826 💡 ••••••	invent /ɪnˈvɛnt/ verb ••••••	- ••••••	invented ••••••	invented ••••••	invents ••••••	inventing ••••••	to create or design something that has not existed before ••••••	Thomas Edison invented the electric bulb. ••••••	reinvent the wheel ••••••	to waste time creating something that already exists ••••••	create, design, develop, originate, devise ••••••	destroy, copy, imitate ••••••	invent a machine, invent a device, invent story, invent technology ••••••
#2827 ⚙️ ••••••	invention /ɪnˈvɛnʃən/ noun ••••••	••••••	- ••••••	- ••••••	- ••••••	- ••••••	a creation or device that has been newly made or designed ••••••	The telephone was a groundbreaking invention. ••••••	mother of invention ••••••	necessity drives people to create solutions ••••••	creation, innovation, discovery, contraption, device ••••••	destruction, imitation ••••••	new invention, scientific invention, modern invention, patent an invention ••••••
#2828 💡 ••••••	inventor /ɪnˈventər/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a person who creates or designs something new, especially a device, method, or process ••••••	The inventor patented her new medical device. ••••••	great inventor ••••••	a person known for creating important or influential inventions ••••••	creator, innovator, designer, originator, pioneer ••••••	imitator, follower ••••••	famous inventor, prolific inventor, inventor of, young inventor ••••••
#2829 💰 ••••••	invest /ɪnˈvɛst/ verb ••••••	••••••	invested ••••••	invested ••••••	invests ••••••	investing ••••••	to put money, time, or effort into something with the expectation of achieving a benefit ••••••	He decided to invest in real estate to secure his future. ••••••	invest in ••••••	to commit money, time, or effort into something ••••••	finance, fund, contribute, allocate, commit ••••••	withdraw, divest ••••••	invest money, invest in stocks, invest heavily, invest wisely ••••••
#2830 🔍 ••••••	investigate /ɪnˈvɛs.tɪ.ɡeɪt/ verb ••••••	- ••••••	investigated ••••••	investigated ••••••	investigates ••••••	investigating ••••••	to carry out a systematic inquiry to discover facts or information ••••••	The police will investigate the incident thoroughly. ••••••	investigate a case ••••••	to examine or look into a specific case ••••••	examine, probe, inspect, explore, analyze ••••••	ignore, overlook ••••••	investigate crime, investigate a complaint, investigate thoroughly ••••••
#2831 🕵️ ••••••	investigation /ɪnˌvɛs.tɪˈɡeɪ.ʃən/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the process of inquiring into or examining something carefully to find the truth ••••••	The investigation revealed new evidence about the fraud. ••••••	under investigation ••••••	being examined or inquired into ••••••	inquiry, probe, inspection, examination, scrutiny ••••••	neglect, disregard ••••••	launch an investigation, conduct an investigation, criminal investigation ••••••
#2832 🕵️ ••••••	investigator /ɪnˈvɛstɪˌɡeɪtər/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a person who carries out a formal inquiry or investigation ••••••	The investigator gathered evidence from the crime scene. ••••••	private investigator ••••••	a detective who works independently, often hired for personal cases ••••••	detective, examiner, inspector, researcher, sleuth ••••••	suspect, criminal ••••••	police investigator, lead investigator, private investigator, chief investigator ••••••
#2833 📈 ••••••	investment /ɪnˈvɛst.mənt/ noun ••••••	••••••	- ••••••	- ••••••	- ••••••	- ••••••	the action or process of putting money, time, or resources into something for future benefit ••••••	Her investment in technology startups has paid off well. ••••••	return on investment ••••••	the profit or loss derived from an investment ••••••	funding, financing, contribution, allocation, venture ••••••	loss, withdrawal ••••••	make an investment, attract investment, foreign investment, wise investment ••••••
#2834 💰 ••••••	investor /ɪnˈvɛstər/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit ••••••	The investor funded the startup with a large sum of money. ••••••	angel investor ••••••	an individual who provides capital for a business startup, usually in exchange for ownership equity ••••••	financier, shareholder, backer, capitalist ••••••	spender, debtor ••••••	foreign investor, private investor, institutional investor, angel investor ••••••
#2835 👻 ••••••	invisible /ɪnˈvɪzɪbəl/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	unable to be seen; not visible to the eye ••••••	The stars became invisible as the sun rose. ••••••	invisible hand ••••••	an unseen force guiding economic or social outcomes ••••••	unseen, hidden, concealed, imperceptible, obscure ••••••	visible, clear, apparent ••••••	invisible force, invisible power, invisible ink, invisible barrier ••••••
#2836 💌 ••••••	invitation /ˌɪnvɪˈteɪʃən/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a written or spoken request to attend an event or to participate in something ••••••	She sent me an invitation to her wedding. ••••••	extend an invitation ••••••	to formally invite someone ••••••	request, call, summon, appeal, proposal ••••••	rejection, refusal ••••••	send invitation, wedding invitation, formal invitation, accept invitation ••••••
#2837 ✉️ ••••••	invite /ɪnˈvaɪt/ verb ••••••	- ••••••	invited ••••••	invited ••••••	invites ••••••	inviting ••••••	to ask someone to come to a place or event ••••••	She invited her friends to the party. ••••••	invite trouble ••••••	to do something that is likely to cause problems ••••••	ask, request, call, summon, beckon ••••••	reject, refuse, dismiss ••••••	invite someone, invite to dinner, warmly invite, cordially invite ••••••
#2838 📨 ••••••	invited /ɪnˈvaɪtɪd/ verb ••••••	- ••••••	invited ••••••	invited ••••••	invites ••••••	inviting ••••••	asked someone formally or politely to go somewhere or do something ••••••	She was invited to the party. ••••••	- ••••••	- ••••••	asked, requested, welcomed, summoned, beckoned ••••••	excluded, rejected, refused ••••••	invited guest, invited to a party, invited formally, invited personally ••••••
#2839 ✉️ ••••••	invitor /ɪnˈvaɪtər/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a person who invites someone to an event, meeting, or place ••••••	The invitor greeted all the guests warmly at the entrance. ••••••	- ••••••	- ••••••	host, inviter, organizer, caller, convenor ••••••	guest, invitee ••••••	formal invitor, event invitor, original invitor, main invitor ••••••
#2840 📜 ••••••	invoke /ɪnˈvoʊk/ verb ••••••	- ••••••	invoked ••••••	invoked ••••••	invokes ••••••	invoking ••••••	to call upon a higher power, authority, or principle for help, support, or justification ••••••	The lawyer invoked the constitution to defend his client. ••••••	invoke the law ••••••	to appeal to or rely on the law for support or justification ••••••	appeal, call upon, cite, summon, request ••••••	ignore, dismiss, reject ••••••	invoke the law, invoke authority, invoke powers, invoke tradition ••••••
#2841 🤲 ••••••	involve /ɪnˈvɑːlv/ verb ••••••	- ••••••	involved ••••••	involved ••••••	involves ••••••	involving ••••••	to include as a necessary part, or to engage someone in an activity ••••••	The project will involve several departments working together. ••••••	get involved ••••••	to participate or take part in something ••••••	include, engage, entail, require, associate ••••••	exclude, remove, neglect ••••••	involve in, involve with, project involves, task involves ••••••
#2842 🔗 ••••••	involved /ɪnˈvɑːlvd/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	complicated or engaged in something ••••••	She was deeply involved in community service. ••••••	become involved ••••••	to take an active part in something ••••••	engaged, committed, complicated, connected ••••••	detached, simple, uninvolved ••••••	deeply involved, personally involved, involved process ••••••
#2843 🤝 ••••••	involvement /ɪnˈvɒlvmənt/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the act of taking part in something ••••••	His involvement in the project was crucial. ••••••	- ••••••	- ••••••	participation, engagement, contribution, role, association ••••••	exclusion, absence, withdrawal ••••••	active involvement, direct involvement, community involvement ••••••
#2844 🇮🇪 ••••••	irish /ˈaɪrɪʃ/ adjective/noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	relating to Ireland, its people, or its language ••••••	The Irish countryside is very beautiful. ••••••	- ••••••	- ••••••	Ireland citizen, Gaelic, Hibernian ••••••	non-Irish, foreigner ••••••	Irish people, Irish language, Irish culture ••••••
#2845 🔩 ••••••	iron /ˈaɪən/ or /ˈaɪərn/ noun/verb ••••••	- ••••••	ironed ••••••	ironed ••••••	irons ••••••	ironing ••••••	a strong, hard metal used in construction; also to press clothes with heat ••••••	He used an iron to smooth his shirt. ••••••	iron out ••••••	to resolve problems or difficulties ••••••	metal, steel, press, flatten ••••••	wrinkle, fold ••••••	iron bar, iron rod, iron clothes, iron ore, iron out issues ••••••
#2846 🙃 ••••••	ironic /aɪˈrɒnɪk/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	happening in the opposite way to what is expected, often amusing or sarcastic ••••••	It is ironic that the fire station burned down. ••••••	isn't it ironic ••••••	used to highlight a situation that is surprisingly contradictory ••••••	sarcastic, paradoxical, mocking, satirical ••••••	straightforward, sincere, expected ••••••	ironic twist, ironic smile, deeply ironic, somewhat ironic ••••••
#2847 😏 ••••••	ironically /aɪˈrɒnɪkli/ adverb ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	in a way that is contrary to what is expected or intended ••••••	Ironically, the fire station burned down. ••••••	- ••••••	- ••••••	sarcastically, paradoxically, unexpectedly, amusingly ••••••	literally, seriously ••••••	ironically enough, say ironically, ironically true ••••••
#2848 🎭 ••••••	irony /ˈaɪrəni/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	a situation that is strange or amusing because it is the opposite of what is expected; the use of words to convey the opposite meaning ••••••	The irony of the situation was that the winner forgot his own prize. ••••••	the irony is ••••••	used to highlight a contradiction between expectations and reality ••••••	sarcasm, paradox, mockery, satire ••••••	sincerity, honesty, straightforwardness ••••••	sense of irony, bitter irony, cruel irony, situational irony ••••••
#2849 🤯 ••••••	irrational /ɪˈræʃənəl/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	not logical or reasonable; lacking clear thought ••••••	His fear of the dark was completely irrational. ••••••	irrational fear ••••••	an unreasonable or extreme fear ••••••	illogical, unreasonable, absurd, senseless ••••••	rational, logical, reasonable ••••••	irrational decision, irrational behavior, irrational belief ••••••
#2850 🌀 ••••••	irrationality ɪˌræʃ.ənˈæl.ɪ.ti noun ••••••	••••••	- ••••••	- ••••••	- ••••••	- ••••••	The quality of being illogical or unreasonable; lack of rational thought. ••••••	His decision was driven by complete irrationality. ••••••	- ••••••	- ••••••	illogicality, foolishness, unreasonableness ••••••	rationality, reason, logic ••••••	- ••••••
#2851 📉 ••••••	irregular /ɪˈreɡjələr/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	not even or consistent in shape, pattern, time, or behavior; not following normal rules ••••••	His attendance at work has been irregular this month. ••••••	irregular verb ••••••	a verb that does not follow standard conjugation rules ••••••	uneven, inconsistent, abnormal, erratic, unusual ••••••	regular, consistent, uniform ••••••	irregular pattern, irregular shape, irregular schedule, irregular heartbeat ••••••
#2852 ⚠️ ••••••	irregularity /ɪˌreɡjəˈlærɪti/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	lack of regularity or consistency; a deviation from what is normal, expected, or orderly ••••••	The audit revealed several financial irregularities in the company’s records. ••••••	- ••••••	- ••••••	abnormality, inconsistency, anomaly, deviation, unevenness ••••••	regularity, consistency, uniformity ••••••	financial irregularity, procedural irregularity, minor irregularity, serious irregularity, reporting irregularity ••••••
#2853 🚫 ••••••	irrelevance /ɪˈreləvəns/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the quality of not being connected to or important for a particular matter; lack of significance ••••••	His long explanation only highlighted the irrelevance of the details to the main issue. ••••••	- ••••••	- ••••••	insignificance, unimportance, inconsequence, triviality, immateriality ••••••	relevance, importance, significance ••••••	complete irrelevance, political irrelevance, claim irrelevance, sense of irrelevance ••••••
#2854 🚫 ••••••	irrelevancy /ɪˈrɛlɪvənsi/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	the state of being unrelated or unimportant to the matter at hand ••••••	The judge dismissed the argument because of its irrelevancy to the case. ••••••	- ••••••	- ••••••	irrelevance, insignificance, inconsequence, immateriality, triviality ••••••	relevance, importance, significance ••••••	complete irrelevancy, total irrelevancy, legal irrelevancy, apparent irrelevancy ••••••
#2855 🚫 ••••••	irrelevant /ɪˈrɛləvənt/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	Not connected with or related to the matter at hand ••••••	His comment was completely irrelevant to the discussion. ••••••	irrelevant detail ••••••	Information that does not matter in the context ••••••	unrelated, immaterial, extraneous, insignificant ••••••	relevant, important, significant ••••••	irrelevant comment, irrelevant detail, irrelevant information, irrelevant answer ••••••
#2856 ⚠️ ••••••	irresponsibility /ˌɪrɪˌspɒnsəˈbɪləti/ noun ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	lack of responsibility or accountability; failure to act in a reliable or sensible way ••••••	The accident was caused by his irresponsibility at work. ••••••	act with irresponsibility ••••••	to behave without care or responsibility ••••••	carelessness, recklessness, negligence, irresponsibleness ••••••	responsibility, accountability, reliability ••••••	financial irresponsibility, social irresponsibility, sheer irresponsibility, act of irresponsibility ••••••
#2857 🤷‍♂️ ••••••	Irresponsible /ɪˈrɪˌspɑn.sə.bəl/ adjective ••••••	- ••••••	- ••••••	- ••••••	- ••••••	- ••••••	lacking a sense of responsibility; careless ••••••	It was irresponsible of him to leave without telling anyone. ••••••	- ••••••	- ••••••	reckless, careless, thoughtless, negligent ••••••	responsible, careful, thoughtful, reliable ••••••	irresponsible behavior, irresponsible person, act irresponsibly ••••••