biofuel
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN English BN Bengali HI Hindi ES Spanish FR French DE German RU Russian ZH Chinese JA Japanese
All Vocabulary Cards All Vocabularies
B2 noun ˈbaɪ.əʊˌfjuː.əl

biofuel

Meaning
A fuel derived immediately from living matter, as opposed to fossil fuels derived from long-dead biological matter.
Example
Biofuels reduce dependence on conventional energy sources.
C2 adjective /ɪnˈsɪpiənt/

incipient

Meaning
in an initial stage; beginning to develop
Example
The incipient storm made the sky turn dark and heavy.
C2 noun /ˈaɪdɪl/

idyll

Meaning
An extremely happy, peaceful, or picturesque episode or scene, often idealized.
Example
Their honeymoon was an idyll on a tropical island.
C1 adjective /rɪˈsɔːrs ɪˈfɪʃ.ənt/

resource-efficient

Meaning
Using resources in a way that minimizes waste and maximizes productivity.
Example
Resource-efficient farming conserves water and energy.
C1 verb /ˈɔːstrəˌsaɪz/

ostracize

Meaning
to exclude someone from a group or society; to banish or shun
Example
After the scandal, he was ostracized by his former colleagues.
A2 noun reɪndʒ

range

Meaning
The extent or scope of something; the distance that can be covered or the limits within which something operates.
Example
The new electric car has a range of 400 miles.
C2 noun /ˈspuːnərɪzəm/

spoonerism

Meaning
A verbal error in which the initial sounds of words are swapped to create a humorous effect.
Example
He made a spoonerism by saying 'queer old dean' instead of 'dear old queen'.
C2 verb /əˈdʒʌdʒ/

adjudge

Meaning
to consider or declare officially in a legal or formal manner
Example
He was adjudged guilty by the court.
C1 noun /pɜːrl drɒp/

Pearl drop

Meaning
a single pearl used as jewelry, often in earrings or pendants
Example
The elegant pearl drop earrings complemented her outfit perfectly.
C1 noun /djuːn/

dune

Meaning
A hill or ridge of sand formed by the wind, usually found in deserts or near beaches.
Example
The children played on the sand dune by the beach.
B1 noun /ˌkæl.kjəˈleɪ.ʃən/

Calculation

Meaning
a mathematical determination of the size or number of something
Example
His calculation of the total cost was accurate to the penny.
C1 noun /ˌɑːk.sɪˈmɔːr.ɒn/

oxymoron

Meaning
a figure of speech where two contradictory terms are combined
Example
The phrase 'deafening silence' is a classic oxymoron.
C1 noun /ˌkɒnstəˈneɪʃən/

consternation

Meaning
A feeling of anxiety, dismay, or confusion, often caused by something unexpected.
Example
The sudden announcement caused widespread consternation among the employees.
B2 noun /ˌɒb.zəˈveɪ.ʃənz/

observations

Meaning
The action or process of observing something carefully.
Example
Observations of distant galaxies provide new insights.
C2 noun /ˈplænɪsfɪr/

planisphere

Meaning
a rotating star chart used to display the visible stars for any time and date
Example
The astronomer used a planisphere to identify the constellations.
C2 adjective /ˈsiːkwənt/

sequent

Meaning
Following in order or as a result.
Example
The sequent events changed the course of history.
C1 adjective /ˈsɒljʊbəl/

soluble

Meaning
able to be dissolved, especially in water
Example
Sugar is soluble in water.
B2 adjective /pəˈrɛntəl/

parental

Meaning
relating to a parent or parents; characteristic of a mother or father
Example
Parental guidance is important for a child's development.
C2 noun /ˈsɜːfdəm/

serfdom

Meaning
The status or condition of being a serf, bound to work for a lord.
Example
Many peasants in medieval Europe lived under serfdom.
A2 noun /æd/

ad

Meaning
a notice or announcement in a public medium promoting a product, service, or event
Example
The company released a new ad for their smartphone.
B2 adjective /ˌmʌl.tiˈpɜː.pəs/

Multipurpose

Meaning
having multiple uses or functions; versatile
Example
This multipurpose tool can be used as a knife, screwdriver, and bottle opener.
B2 noun /ˌdel.ɪˈɡeɪ.ʃən/

delegation

Meaning
A group of people chosen to represent others in negotiations or discussions.
Example
The delegation presented their country's agenda.
C1 noun /ˌstætɪˈstɪʃən/

statistician

Meaning
A person who specializes in collecting, analyzing, and interpreting numerical data.
Example
The statistician presented the survey results with great clarity.
B1 verb /ˈkæri aʊt/

carry out

Meaning
to perform or complete a task; to execute a plan
Example
The team carries out the project successfully.
C1 noun /ˈkæn.dɚ/

candor

Meaning
The quality of being open, honest, and straightforward in speech or expression.
Example
She spoke with candor about the challenges she faced.
C1 noun ˈkɒnfluəns

confluence

Meaning
An act or process of merging.
Example
The confluence of ideas from different cultures created a rich discussion.
B2 noun/verb /krɪˈtiːk/

critique

Meaning
A detailed analysis and assessment of something, especially a literary, philosophical, or political theory; to evaluate critically.
Example
The professor asked the students to critique each other's essays.
B2 noun /slɛdʒ/

sledge

Meaning
a vehicle for traveling over snow, often pulled by animals
Example
The children rode a sledge down the snowy hill.
B2 noun /njuːˈtrɪʃ.ən/

nutrition

Meaning
The process of providing or obtaining the food necessary for health and growth.
Example
Good nutrition is vital for a healthy life.
B2 verb /niːl/

kneel

Meaning
to go down on one's knees; to rest on the knees
Example
The knight knelt before the king.
C1 adjective /ˈækʃənəbl̩/

actionable

Meaning
Able to be acted on or giving sufficient reason for legal action.
Example
The lawyer confirmed that the evidence was actionable in court.
C2 noun /ˌænɪˈmɒmɪtər/

anemometer

Meaning
An instrument used to measure the speed and direction of wind.
Example
The scientist used an anemometer to record the wind speed during the storm.
C2 noun /ˈɒlɪv bɑːb/

Olive barb

Meaning
A small freshwater fish with olive-colored body and barbels
Example
The olive barb is commonly found in South Asian rivers.
A2 noun /ˈsen.tʃər.i/

Century

Meaning
a period of one hundred years; a score of one hundred in cricket
Example
The ancient castle has stood for more than five centuries.
C2 adjective /ˈʌŋk.tʃu.əs/

unctuous

Meaning
Excessively flattering or ingratiating; oily in texture.
Example
His unctuous tone made everyone uncomfortable.
B2 noun /ˌkɒndɛnˈseɪʃən/

condensation

Meaning
The process of water vapor changing into liquid; also, the act of making something more concise.
Example
Condensation formed on the windows during the cold night.
C2 verb /əˈbrɪdʒ/

abridge

Meaning
to shorten a text without losing its meaning
Example
The editor decided to abridge the long novel for young readers.
C2 noun /ɪˈlɪksər/

elixir

Meaning
A magical or medicinal potion believed to cure illnesses or grant immortality.
Example
The old legend spoke of an elixir that could grant eternal youth.
A1 preposition /ˈɪntuː/

into

Meaning
expressing movement or direction to the inside of something
Example
She walked into the room quietly.
B2 noun əˈbʌndəns

abundance

Meaning
A very large quantity of something; plenty
Example
The abundance of vegetables in winter is remarkable.
B2 verb /ˈnæreɪt/

narrate

Meaning
To tell a story or describe events, often in detail.
Example
She will narrate the events of her journey to the audience.
C1 verb /ˈwɪtl/

whittle

Meaning
to carve or shape something by cutting off small pieces; to gradually reduce
Example
He spent the afternoon whittling a piece of wood into a toy.
B2 noun ˈfreɪm.wɜːks

frameworks

Meaning
A basic structure underlying a system, concept, or text; an essential supporting structure.
Example
Frameworks define the basis of systems.
C2 verb /rɪˈtrɛntʃ/

retrench

Meaning
to reduce costs, spending, or staff to save resources
Example
The company had to retrench employees due to financial difficulties.
C1 noun /ˈoʊ.vər spɪl/

Over-spill

Meaning
the overflow of liquid from a container; excess that cannot be contained
Example
The overspill from the river flooded nearby farms.
B2 noun /ˌkɑn.frənˈteɪ.ʃən/

Confrontation

Meaning
a hostile or argumentative meeting or situation between opposing parties; direct challenge or opposition
Example
The confrontation between the two leaders ended without any agreement.
B1 noun /ˈpɪkʌp/

pickup

Meaning
a small truck with an open back; the act of collecting or improving something
Example
The company scheduled a pickup for the returned goods.
C2 noun /ˈklaɪmɪŋ fɪʃ/

Climbing-fish

Meaning
a type of fish that can climb trees and survive out of water for short periods
Example
The climbing-fish can move from one pond to another by climbing trees.
B1 noun /klɪf/

cliff

Meaning
a high, steep face of rock or earth
Example
The waves crashed against the bottom of the cliff.
B2 noun/verb /ˈsɜːveɪ/

survey

Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
B1 adverb /ˌnesəˈserəli/

Necessarily

Meaning
as a necessary result; inevitably; by logical consequence
Example
Rich people are not necessarily happy.
B1 noun /ˈfaɪər.mən/

Fireman

Meaning
a person whose job is to extinguish fires and rescue people
Example
The brave fireman rescued the family from the burning building.
B2 noun /ˈɒkjʊpənt/

occupant

Meaning
A person who resides in or is present in a house, vehicle, seat, or place.
Example
The car had three occupants at the time of the accident.
B2 noun /wɪt/

Wit

Meaning
mental sharpness and inventiveness; keen intelligence; a natural aptitude for using words in a clever and amusing way
Example
She has a sharp wit and quick sense of humor.
C2 adjective /ˌɛvɪˈdɛnʃəl/

evidential

Meaning
relating to or providing evidence
Example
The lawyer presented evidential support for her claims.
B2 noun /taɪˈfuːn/

typhoon

Meaning
a tropical storm in the region of the Indian or western Pacific oceans
Example
The typhoon caused severe flooding in the coastal areas.
C2 noun /ˈmɛzməˌrɪzəm/

mesmerism

Meaning
A state of fascination or hypnotism.
Example
The magician held the audience in a state of mesmerism.
C2 verb /ˈprætəl/

prattle

Meaning
to talk at length in a foolish or inconsequential way
Example
The children would prattle on about their games.
B1 verb /ˈberi/

bury

Meaning
to put in the ground; to hide; to cover completely
Example
The dog buries its bone in the yard.
C2 noun /ˌpætrəˈnɪmɪk/

patronymic

Meaning
a name derived from the name of a father or ancestor
Example
In many cultures, surnames are patronymic in origin.
C2 verb /ˈflædʒəˌleɪt/

flagellate

Meaning
to whip or flog someone, either literally or as a form of punishment or self-discipline
Example
In history, some monks would flagellate themselves as penance.
C1 adjective /ˈfɪɡərətɪv/

figurative

Meaning
not literal; using figures of speech or symbolic representation
Example
She used figurative language to describe her feelings.
C1 noun /rɪˈkɒnɪsəns/

reconnaissance

Meaning
A survey or exploration, especially for military or strategic purposes.
Example
The soldiers conducted a reconnaissance of the enemy camp.
B1 noun /weɪv/

Wave

Meaning
a moving ridge on the surface of water; a gesture of greeting or farewell
Example
The surfer rode the big wave all the way to the shore.
C2 noun /ˈpær.ɪ.saɪd/

parricide

Meaning
The act of killing one's father, mother, or other close relative.
Example
The court tried him for parricide after the tragic incident.
A1 noun /ˈfəʊtəʊ/

photo

Meaning
a picture or image captured by a camera
Example
I took a photo of the sunset.
B1 noun /kəʊst/

Coast

Meaning
the part of the land near the sea; the edge of the land
Example
We drove along the coast to enjoy the view.
C2 noun /ˈfrɛʃɪt/

freshet

Meaning
A sudden overflow of a stream or river caused by heavy rain or melting snow.
Example
After the storm, the river turned into a raging freshet.
C2 adjective /ˈprɒmɪsəri/

promissory

Meaning
Containing or conveying a promise, especially in writing.
Example
He signed a promissory note to repay the loan.
C1 adjective /ˈhɑːrdi/

hardy

Meaning
Strong, robust, and capable of enduring difficult conditions.
Example
Hardy plants can survive the harsh winter.
B2 adjective /ˈpʌz.lɪŋ/

Puzzling

Meaning
confusing; perplexing;
Example
The scientist found the results puzzling.
C2 verb /ˈæd.l̩/

addle

Meaning
To confuse or muddle someone’s mind.
Example
The complicated instructions only served to addle him.
B1 noun /tʃiːf/

chief

Meaning
a leader or person in charge of a group or organization
Example
The chief of the village made an important decision.
B1 adjective /ˈθæŋk.fəl/

Thankful

Meaning
pleased and relieved; expressing gratitude; appreciative
Example
I am thankful for all your help and support.
B2 verb /əbˈteɪn/

obtain

Meaning
to get or acquire something
Example
You need to obtain a visa before traveling abroad.
C2 noun /ˈhɪlək/

hillock

Meaning
A small hill or mound.
Example
The children climbed up the grassy hillock to watch the sunset.
C1 adverb /ˌðɛərˈɪn/

Therein

Meaning
in that place; in that respect
Example
The box contains many treasures, and therein lies its value.
B1 verb /ˈfɛri/

ferry

Meaning
to transport by boat; to carry back and forth
Example
The boat ferried passengers across the river.
A2 adjective /ˈfɪnɪʃt/

finished

Meaning
completed or brought to an end
Example
The painting is finished and ready to display.
A2 noun /ˈkænsər/

cancer

Meaning
A disease in which abnormal cells divide uncontrollably and destroy body tissue.
Example
Smoking is a leading cause of lung cancer.
B2 adjective sɪˈvɪər

severe

Meaning
Very great; intense or extreme in degree.
Example
Without action, climate change impacts will become severe.
B2 noun /taɪd/

Tide

Meaning
the alternate rising and falling of the sea, usually twice in each lunar day, due to the attraction of the moon and sun
Example
The fishermen waited for high tide to launch their boats.
C1 adverb /ˈheɪs.tɪ.li/

Hastily

Meaning
in a hurried or rushed manner; quickly and carelessly
Example
She hastily packed her bags before leaving for the airport.
A1 verb /læf/

laugh

Meaning
to make sounds and movements expressing happiness or amusement
Example
The joke made everyone laugh.
B2 verb /ɪkˈspoʊz/

expose

Meaning
to reveal or uncover; to make visible or known
Example
The investigation exposed the truth about the scandal.
B2 verb /ʃʌv/

shove

Meaning
to push someone or something roughly
Example
He shoved the box into the corner.
C2 adverb /əˈsʌndər/

asunder

Meaning
into separate parts; apart
Example
The ancient empire was torn asunder by war.
A2 verb /mɪks/

mix

Meaning
To combine different substances or elements together.
Example
She likes to mix different colors to create new shades.
B2 adjective /ˈnoʊtəbl/

notable

Meaning
worthy of attention or notice; remarkable
Example
She made a notable contribution to the project.
C2 noun /flæks/

flax

Meaning
a plant whose fibers are used to make linen and whose seeds are edible
Example
Flax is often used in making linen fabrics.
C2 noun /ˈruː.mɪ.nənt/

ruminant

Meaning
a cud-chewing mammal, such as a cow or sheep
Example
Cows are ruminants that chew cud.
B2 noun /lɔːɡ/

Log

Meaning
a piece of a dead or felled tree trunk or branch, especially one stripped of bark
Example
They sat on a log by the campfire.
B1 verb /ɪnˈɡeɪdʒ/

engage

Meaning
To participate or become involved in; to attract or hold attention.
Example
The teacher tried to engage the students in the discussion.
B2 adjective /ˈsteɪʃəˌneri/

stationary

Meaning
Not moving or not intended to be moved.
Example
The car remained stationary at the red light.
B2 adjective /ˈaɪ.dəl/

Idle

Meaning
lazy; inactive; not working or being used
Example
The factory workers were idle during the strike.
C2 adjective /ɪnˈtræn.sɪ.dʒənt/

intransigent

Meaning
Unwilling or refusing to change one's views or to agree about something.
Example
His intransigent stance delayed the agreement.
A2 noun /hɑːrt/

Heart

Meaning
the organ in the chest that pumps blood through the body; the center of emotions and feelings
Example
The doctor listened to my heart with a stethoscope.
C1 noun /ˌrev.əˈluː.ʃən.ər.i ˈbreɪk.θruː/

revolutionary breakthrough

Meaning
A sudden, dramatic, and important discovery or development that changes everything.
Example
Robotic surgery is a revolutionary breakthrough in healthcare.
C1 adjective /ˌsæŋktɪˈmoʊniəs/

sanctimonious

Meaning
Making a show of being morally superior to others; hypocritically pious.
Example
He gave a sanctimonious speech about honesty while he himself was corrupt.
C2 noun/verb /ˈmæn.ə.kəl/

manacle

Meaning
A metal shackle for fastening someone's hands or ankles; also to restrain with such shackles.
Example
The prisoner was manacled before being taken to court.
B1 adjective /əˈʃeɪmd/

Ashamed

Meaning
feeling embarrassed or guilty because of one's actions
Example
He was ashamed of his poor performance.
C1 adjective /ˈpleɪntɪv/

plaintive

Meaning
expressing sadness or sorrow
Example
He raised a plaintive cry for help.
C2 noun /ˈhɑːstəlri/

hostelry

Meaning
An inn or lodging place, especially one for travelers.
Example
They stayed at a small hostelry near the mountains.
C1 noun dɪˈskrep.ən.siz

discrepancies

Meaning
Differences between things that should be the same
Example
Discrepancies in regulations delay progress.
C1 noun /ˈek.saɪl/

Exile

Meaning
the state of being barred from one's native country; enforced removal from one's homeland
Example
The political leader was forced into exile after the military coup.
B2 noun /ˈfluː.ən.si/

fluency

Meaning
The ability to speak or write a language smoothly and effortlessly.
Example
She speaks English with remarkable fluency.
A2 noun ˈsen.tərz

centers

Meaning
The middle point of a circle or sphere, equidistant from every point on the circumference or surface; a place or group of buildings where a specified activity is concentrated.
Example
Centers drive regional development.
B2 noun ɪnˈfleɪʃən

inflation

Meaning
A general increase in prices and fall in the purchasing value of money.
Example
Inflation erodes the purchasing power of consumers.
C1 adjective /ˈluː.krə.tɪv/

lucrative

Meaning
Producing a great deal of profit; highly profitable or financially rewarding.
Example
The real estate business is highly lucrative in urban areas.
B2 noun ˈkɛmɪkəl weɪst

chemical waste

Meaning
Waste material from industrial or laboratory processes that contains harmful chemicals.
Example
Chemical waste pollutes water bodies.
C1 noun /sɪv/

sieve

Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
C2 noun /proʊˈsiː.ni.əm/

proscenium

Meaning
the part of a theater stage in front of the curtain; the arch framing the stage
Example
The actors bowed at the proscenium before leaving the stage.
A2 noun /ˈbɪznəsmæn/

businessman

Meaning
a person engaged in commercial or industrial business activities
Example
The businessman invested heavily in new technology.
C2 verb /ˈflʌməks/

flummox

Meaning
To confuse or bewilder someone completely.
Example
The complicated puzzle flummoxed the students.
C1 noun, adjective /ˈɡʊrmeɪ/

gourmet

Meaning
A person who appreciates fine food and drink; also refers to high-quality food.
Example
They went to a gourmet restaurant to celebrate their anniversary.
B2 noun /ˌrɛɡ.jʊˈleɪ.ʃən/

regulation

Meaning
A rule or directive made and maintained by an authority.
Example
Government regulation ensures fair business practices.
C2 adjective /ˌɛlɪˈfæntaɪn/

elephantine

Meaning
Huge, clumsy, or resembling an elephant in size or movement.
Example
The man moved with an elephantine grace.
C2 adjective /ˌdɛl.ɪˈtɪə.ri.əs/

deleterious

Meaning
Causing physical or mental harm or damage.
Example
Smoking has deleterious effects on health.
A2 noun /səˈpraɪz/

surprise

Meaning
a sudden and unexpected event or situation
Example
His arrival was a pleasant surprise.
C1 noun /ˌdɪspɛnˈseɪʃən/

dispensation

Meaning
An exemption from a rule or usual requirement; a system of order, government, or control.
Example
The school granted him a special dispensation to skip the exam due to illness.
A2 noun /ˈkæs.əl/

Castle

Meaning
a large fortified building or set of buildings; a fortress
Example
The medieval castle stood majestically on top of the hill.