treacherous
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C1 adjective /ˈtrɛtʃərəs/

treacherous

Meaning
Dangerously unstable or deceptive; likely to betray trust.
Example
The treacherous road made driving difficult.
C1 noun /ˈtæl.i/

Tally

Meaning
a count or record of a number or amount; a score or total
Example
Keep a tally of how many books you read this month.
C1 noun /ˈtrɪŋkɪt/

trinket

Meaning
a small ornament or piece of jewelry that is not expensive
Example
She bought a little trinket from the beach market as a souvenir.
C1 noun /ˈtrɪkstər/

trickster

Meaning
A person who cheats or deceives people.
Example
The old man turned out to be a clever trickster who fooled everyone.
C1 noun /tɪf/

tiff

Meaning
a small or petty quarrel or argument
Example
They had a little tiff over what movie to watch.
C1 noun /tɪˈmɪdəti/

timidity

Meaning
lack of courage or self-confidence
Example
His timidity kept him from speaking up during the meeting.
C1 noun /ˌtɒləˈreɪʃən/

toleration

Meaning
The practice of allowing something that one does not necessarily agree with.
Example
The government promoted religious toleration.
C1 adjective /ˈtɛmpərəl/

temporal

Meaning
Relating to worldly affairs or to time rather than spiritual matters.
Example
The monk gave up his temporal possessions to live a simple life.
C1 adjective /ˈtæn.tə.laɪ.zɪŋ/

Tantalizing

Meaning
tempting and attractive but out of reach
Example
The tantalizing aroma of fresh bread filled the bakery.
C1 adjective /ˈtɛmpərd/

tempered

Meaning
having a specified temper or disposition; strengthened or moderated.
Example
She gave a tempered response to the criticism.
C1 verb /ˈtrɪkl̩/

trickle

Meaning
To flow or fall in a small, slow stream or drops.
Example
Water began to trickle down the wall after the heavy rain.
C1 verb trænˈsɛnd

transcend

Meaning
To go beyond the limits of something; to surpass or exceed
Example
His effort to transcend traditional methods was commendable.
C1 noun /təˈlɛpəθi/

telepathy

Meaning
the supposed communication of thoughts or ideas by means other than the known senses
Example
The twins claimed to share telepathy with each other.
C1 adjective /tɛk ˈdrɪv.ən/

tech-driven

Meaning
Powered or guided by technology; dependent on technological advancement for operation.
Example
The agricultural sector is becoming more tech-driven for higher efficiency.
C1 noun /teɪnt/

Taint

Meaning
a stain or mark that spoils something; corruption or contamination
Example
The scandal left a permanent taint on his reputation.
C1 adjective ˈtæktɪkəl

tactical

Meaning
Relating to or constituting actions carefully planned to gain a specific military or political end.
Example
Tactical thinking is crucial in business negotiations.
C1 adjective /ˌtræn.senˈdɛn.təl/

transcendental

Meaning
relating to the spiritual or non-physical realm; surpassing ordinary experience
Example
Meditation can lead to transcendental experiences.
C1 noun, verb /ˈtætər/

tatter

Meaning
A torn piece of cloth or clothing; to become ragged or torn.
Example
The old flag hung in tatters after the storm.
C1 noun/verb /θrɒŋ/

throng

Meaning
A large, densely packed crowd of people or animals; to fill or be present in a place in large numbers.
Example
Tourists thronged the streets during the festival.
C1 noun ˈtær.ɪf

tariff

Meaning
A tax or duty to be paid on a particular class of imports or exports.
Example
The government imposed high tariffs on luxury goods.
C1 adjective /ˈtep.ɪd/

Tepid

Meaning
only slightly warm; lukewarm; showing little enthusiasm
Example
The tea was tepid and unappetizing.
C1 adjective /ˈtɒrɪd/

torrid

Meaning
Very hot and dry; full of strong emotions or passion.
Example
The desert heat was torrid during the day.
C1 adjective /ˈtɒp.məʊst/

Topmost

Meaning
highest in position or rank
Example
The flag was placed on the topmost branch of the tree.
C1 noun /ˈtem.pɚ.əns/

temperance

Meaning
Moderation in action, thought, or feeling; restraint.
Example
Temperance is essential for a balanced life.
C1 noun/verb /ˈtæm.pər.ɪŋ/

tampering

Meaning
The action of interfering with something in order to cause damage or make unauthorized alterations.
Example
Tampering with evidence is a criminal offense.
C1 noun /ˈtrɪkəri/

trickery

Meaning
The use of dishonest methods to deceive or cheat someone.
Example
The politician was accused of winning the election through trickery.
C1 noun /ˈtrɛʒərər/

treasurer

Meaning
a person responsible for managing the financial affairs of an organization
Example
The treasurer presented the annual financial report.
C1 adjective /ˈtʌf.tɪd/

Tufted

Meaning
having a tuft or tufts; furnished with a tuft or clump of threads, hairs, or other material
Example
The tufted sofa looked elegant in the living room.
C1 adjective /ˈtɪp.tɒp/

Tiptop

Meaning
of the highest quality; excellent; in perfect condition
Example
The car is in tiptop condition.
C1 adjective /ˈtɜːrbjələnt/

turbulent

Meaning
Characterized by conflict, disorder, or confusion; not stable or calm.
Example
The country went through a turbulent period of political change.
C1 noun /tækˈsɒnəmi/

taxonomy

Meaning
The science or practice of classifying things, especially organisms.
Example
Modern taxonomy helps scientists organize and study biodiversity.
C1 adjective /traɪt/

trite

Meaning
Overused and lacking originality.
Example
The speech was full of trite phrases.
C1 noun /ˈtrævɪsti/

travesty

Meaning
A false, absurd, or distorted representation of something.
Example
The trial was a travesty of justice.
C1 noun ˈtɑksɪk ɪˈmɪʃənz

toxic emissions

Meaning
Harmful or poisonous substances released into the environment, especially the atmosphere.
Example
Toxic emissions from vehicles pollute the atmosphere.
C1 adjective tɪˈneɪ.ʃəs

tenacious

Meaning
Not readily letting go of, giving up, or separated from an object that one holds, a position, or a principle; persistent.
Example
Her tenacious spirit helped her overcome hardships.
C1 noun /ˈtrænsfərəns/

transference

Meaning
The act of moving something from one place, person, or situation to another.
Example
The transference of knowledge is essential in education.
C1 noun /ˈθɪk.ɪt/

Thicket

Meaning
a dense group of bushes or trees; a thick growth of shrubs
Example
The rabbit disappeared into the thicket.
C1 adjective /ˈtæk.taɪl/

tactile

Meaning
Connected with the sense of touch; perceptible by touch or giving a sensation when touched.
Example
The tactile experience of the fabric was soft and smooth.
C1 verb /ˈθiːəraɪz/

theorize

Meaning
To form a theory or set of ideas to explain something.
Example
Scientists often theorize about the origins of the universe.
C1 adjective /tɪˈrænɪkəl/

tyrannical

Meaning
exercising power in a cruel or arbitrary way
Example
The tyrannical ruler silenced all opposition.
C1 adjective /tɛmˈpɛstjuəs/

tempestuous

Meaning
Characterized by strong and turbulent emotions or stormy conditions.
Example
Their tempestuous relationship often swung between love and anger.
C1 noun /ˈtɛknɪk/

technic

Meaning
A method, skill, or art in a particular field, especially in the arts or sciences.
Example
The artist’s technic in watercolor impressed the judges.
C1 adjective /ˈtrænzɪtɔːri/

transitory

Meaning
Not permanent; temporary.
Example
The transitory nature of fame makes it difficult to maintain.
C1 verb /ˈtiːtər/

teeter

Meaning
to move or balance unsteadily; to wobble
Example
The glass began to teeter on the edge of the table.
C1 adjective /təˈren.ʃəl/

Torrential

Meaning
falling rapidly in copious streams; extremely heavy rainfall
Example
The torrential rain flooded the streets within hours.
C1 noun /ˈtreɪ.ki.ə/

Trachea

Meaning
the tube that carries air from the throat to the lungs; windpipe
Example
The trachea is protected by cartilage rings that keep it open.
C1 noun /tɔːrk/

torque

Meaning
A twisting force that causes rotation.
Example
The mechanic measured the torque of the engine.
C1 adjective /trænsˈluːsənt/

translucent

Meaning
allowing light to pass through, but not clearly enough to see detailed images
Example
She placed the flower in a translucent vase.
C1 noun /twɪndʒ/

twinge

Meaning
a sudden, sharp pain or an emotional pang
Example
He felt a twinge of guilt after lying to his friend.
C1 noun /ˌtɛstɪˈməʊnɪəlz/

testimonials

Meaning
Written or spoken statements of praise or recommendation from clients or customers.
Example
Positive testimonials can enhance a company's reputation.
C1 noun /ˈθʌroʊˌfɛr/

thoroughfare

Meaning
a main road or public highway that goes through a place
Example
The new mall is located along the main thoroughfare.
C1 adjective /ˈtrænziənt/

Transient

Meaning
lasting for only a short time; temporary
Example
The beauty of spring flowers is transient.
C1 verb /θrɒb/

throb

Meaning
to beat or pulse strongly, often with pain
Example
His head began to throb after the long day.
C1 noun /ˈtændʒənt/

tangent

Meaning
a straight line or plane that touches a curve or curved surface at a point but does not cross it
Example
The teacher drew a tangent to the circle on the board.
C1 verb /ˈtɑːtər/

totter

Meaning
To move unsteadily, as if about to fall; to be on the point of collapse.
Example
The old man tottered across the street with a cane.
C1 adjective /ˈteɪn.tɪd/

Tainted

Meaning
contaminated or affected by something bad or undesirable
Example
The water supply was tainted with harmful chemicals.
C1 noun /truːs/

truce

Meaning
An agreement between enemies or opponents to stop fighting for a certain time.
Example
The two countries agreed to a truce after weeks of intense fighting.
C1 adverb /ˌðeərəˈpɒn/

Thereupon

Meaning
immediately after that; following that event
Example
He finished his speech and thereupon left the stage.
C1 noun /ˈtem.pər.ə.mənt/

Temperament

Meaning
a person's natural disposition or mood; characteristic behavior patterns
Example
She has a calm temperament that helps her handle stress well.
C1 noun /təˈnæs.ə.ti/

tenacity

Meaning
Determination, persistence, and the quality of not giving up
Example
His tenacity in solving problems led to his success.
C1 noun /trentʃ/

Trench

Meaning
a long, narrow ditch; a deep furrow in the ground, especially one used for military defense
Example
The soldiers dug a trench for protection during the battle.
C1 noun /ˈtem.pɪst/

Tempest

Meaning
a violent storm with strong winds; a state of great disturbance or tumult
Example
The sailors struggled to navigate through the fierce tempest.
C1 adverb /ˈðɛərfɔːr/

therefor

Meaning
For that or for it.
Example
He received payment and gave a receipt therefor.
C1 verb /tiːm/

teem

Meaning
to be full of or swarming with
Example
The forest teems with wildlife.
C1 noun /toʊm/

tome

Meaning
a large, heavy book, often scholarly or serious in nature
Example
She spent the afternoon reading an old tome on medieval history.
C1 adjective /ˈtrænzvɜːrs/

transverse

Meaning
situated or lying across something
Example
The transverse road connects two highways.
C1 noun /tɒŋ/

tong

Meaning
a tool with two movable arms used to pick up and hold objects
Example
He used the tong to pick up the hot coal.
C1 noun /ˈtoʊtəm/

totem

Meaning
A natural object, animal, or symbol that is revered as a spiritual emblem by a group or tribe.
Example
The eagle is considered a sacred totem in many cultures.
C1 verb /ˈtræmpəl/

trample

Meaning
to tread heavily on something and cause damage or injury
Example
The crowd trampled the flowers in the park.
C1 noun /tɪnt/

tint

Meaning
a slight shade or variation of a color
Example
The walls were painted white with a slight blue tint.
C1 noun /ˈtæbloʊ/

tableau

Meaning
a striking or artistic scene or arrangement of people or objects, often presented on stage or in art
Example
The actors froze in a tableau that captured the final moment of the play.
C1 noun /trænsˈɡrɛʃən/

transgression

Meaning
an act that goes against a law, rule, or code of conduct; a violation or sin
Example
The court forgave his first transgression but warned him not to repeat it.
C1 noun /ˈtæm.ər.ɪnd/

Tamarind

Meaning
a brown tropical fruit with a tangy, sour taste used in cooking and beverages
Example
Tamarind is commonly used in Asian and Middle Eastern cuisines for its sour flavor.
C1 noun /ˈtraɪ.pɒd/

tripod

Meaning
A three-legged stand used to support a camera, telescope, or other object.
Example
The photographer set up his camera on a tripod.
C1 adjective /taɪˈtænɪk/

titanic

Meaning
Of exceptional strength, size, or power.
Example
The company made titanic efforts to expand into new markets.
C1 noun ˌtoʊ.kə.nɪˈzeɪ.ʃən

tokenization

Meaning
The process of breaking text into smaller units like words, phrases, or symbols for analysis.
Example
NLP uses tokenization to break text into smaller units.
C1 noun /taɪˈpɒɡrəfi/

typography

Meaning
the art and technique of arranging type to make written language legible and visually appealing
Example
Good typography improves the readability of a website.
C1 noun/verb /ˈtʌtʃ.ʌp/

touch-up

Meaning
Small corrections or improvements made to something.
Example
The artist gave a quick touch-up to the painting.
C1 noun /ˈtɜː.mɔɪl/

turmoil

Meaning
A state of great disturbance, confusion, or uncertainty.
Example
The political turmoil led to mass protests.
C1 noun /ˈtæn.ə.ri/

tannery

Meaning
A place where animal hides are processed into leather.
Example
The tannery produced high-quality leather for export.
C1 verb /trænˈzækt/

transact

Meaning
to conduct or carry out business, a deal, or activity
Example
Customers can transact their banking online.
C1 noun/verb /tɔːrˈpiːdoʊ/

torpedo

Meaning
A self-propelled underwater missile; to attack or destroy something suddenly and forcefully.
Example
The submarine launched a torpedo at the enemy ship.
C1 verb /ˈtɛðər/

tether

Meaning
To tie an animal with a rope or chain so it cannot move far.
Example
The farmer tethered the goat to a post.
C1 verb θwɔːt

thwart

Meaning
Prevent (someone) from accomplishing something; oppose successfully.
Example
His efforts to thwart the proposal were unsuccessful.
C1 noun ˈθɜː.məl stres

thermal stress

Meaning
Stress caused by excessive heat that affects plant growth and development.
Example
High thermal stress affects plant growth.
C1 adjective /ˈtɪərfəl/

Tearful

Meaning
expressing or showing sadness and sorrow; inclined to weep
Example
She gave a tearful goodbye to her friends at the airport.
C1 noun /ˈtrɛtʃəri/

treachery

Meaning
Betrayal of trust; deceptive action or nature.
Example
His treachery was revealed when he sided with the enemy.
C1 adjective /ˈtɜːrnkiː/

turnkey

Meaning
ready for immediate use; a complete product or solution
Example
The company provides turnkey solutions for small businesses.
C1 noun /ˈθʌroʊˌbrɛd/

thoroughbred

Meaning
a horse of pure and recognized breed; a person of good breeding or education
Example
The jockey rode a fast thoroughbred in the race.
C1 verb /ˈtræŋ.kwɪ.laɪz/

tranquilize

Meaning
to make someone or something calm or less anxious, often by using drugs
Example
The veterinarian had to tranquilize the tiger before moving it.
C1 noun /ˈtɜːrbjələns/

turbulence

Meaning
Violent or unsteady movement of air, water, or some other fluid; disorder or conflict.
Example
The plane experienced severe turbulence during the flight.
C1 noun ˌtraɪ.bjuˈnæl əv ˈdʒʌs.tɪs

tribunal of justice

Meaning
A court of justice or judicial body that settles disputes or tries offenses.
Example
The Tribunal of Justice started the hearings promptly.
C1 noun trænˈsɛndəns

transcendence

Meaning
Existence or experience beyond the normal or physical level.
Example
The artist's work was a symbol of transcendence in creativity.
C1 adjective /θiːˈmætɪk/

thematic

Meaning
Relating to or based on a theme.
Example
The book is organized into thematic chapters.
C1 noun /ˈtɒpˌsɔɪl/

topsoil

Meaning
the top layer of soil, which is rich in organic matter and nutrients
Example
Farmers rely on healthy topsoil for good crop yields.
C1 verb /ˈtɑːrnɪʃ/

tarnish

Meaning
To lose luster, especially as a result of exposure to air or moisture; to damage reputation.
Example
The silver jewelry tarnished quickly when left in the open air.
C1 adjective /ˈtraɪflɪŋ/

Trifling

Meaning
of little importance; trivial; insignificant
Example
Don't worry about such trifling matters.
C1 noun /ˌtes.tɪˈmoʊ.ni.əl/

Testimonial

Meaning
a formal statement testifying to someone's character and qualifications
Example
The professor wrote a glowing testimonial for her former student.
C1 noun /ˈtrɪlədʒi/

trilogy

Meaning
a set of three related works, usually books or films, that form a connected story
Example
The director finally released the third film to complete the sci-fi trilogy.
C1 adjective /ˈtɪklɪʃ/

ticklish

Meaning
easily made to laugh by being touched lightly; easily upset or sensitive
Example
She is very ticklish and bursts into laughter when touched on her feet.
C1 noun /ˈtwɪstər/

twister

Meaning
A tornado or something that twists; also refers to a challenging tongue twister.
Example
The twister destroyed several houses in the village.
C1 adjective /ˈtɛnəbl/

tenable

Meaning
able to be defended or maintained against attack or objection
Example
His argument was strong and tenable in court.
C1 noun /ˈtrɪb.jə.ter.i/

Tributary

Meaning
a river or stream flowing into a larger river or lake
Example
The tributary joins the main river near the city.
C1 adjective /tænˈdʒɛnʃəl/

tangential

Meaning
relating to or along a tangent; slightly or indirectly related to something
Example
His remarks were tangential to the main topic of discussion.
C1 noun /ˈtrɪp.lət/

triplet

Meaning
One of three children or animals born at the same time to the same mother.
Example
The family was surprised to have triplets instead of twins.
C1 noun /tækt/

tact

Meaning
Adroitness and sensitivity in dealing with others or with difficult issues.
Example
He handled the situation with tact and professionalism.
C1 noun/verb /tæk/

tack

Meaning
a small sharp nail; or to change direction in sailing or approach something differently
Example
She used a tack to pin the paper on the wall.
C1 noun /ˌtæm.bəˈriːn/

Tambourine

Meaning
a small drum with metal discs around the edge that jingle when shaken or hit
Example
She shook the tambourine to the rhythm of the music.
C1 adverb /ˌðɛərˈɪn/

Therein

Meaning
in that place; in that respect
Example
The box contains many treasures, and therein lies its value.
C1 verb /ˈtɪŋkər/

tinker

Meaning
to make small adjustments or repairs to something, often experimentally or imperfectly
Example
He likes to tinker with old radios in his garage.
C1 noun /trænsˈfjuːʒən/

transfusion

Meaning
the process of transferring blood or another fluid into a person's vein
Example
The patient received a blood transfusion after the accident.
C1 verb /ˈtæmpər/

tamper

Meaning
To interfere with something in a harmful, unauthorized, or improper way.
Example
The evidence was tampered with before the trial.
C1 noun /treɪd fəˌsɪl.ɪˈteɪ.ʃən/

trade facilitation

Meaning
The simplification, modernization and harmonization of export and import processes.
Example
Trade facilitation boosts economic growth.
C1 noun /traɪˈbjuːnəl/

tribunal

Meaning
a court of justice or body established to settle disputes
Example
The case was heard in an international tribunal.
C1 noun /ˌtrænsˈpɪəreɪʃən/

transpiration

Meaning
The process by which plants lose water through their leaves, which plays a crucial role in plant cooling, nutrient transport, and the water cycle.
Example
Transpiration plays a key role in the water cycle and plant growth.
C1 noun /ˈtɛnər/

tenor

Meaning
the general meaning, drift, or character of something; a male singing voice between baritone and alto
Example
The overall tenor of his speech was hopeful and reassuring.
C1 noun /ˈtræpɪŋz/

trappings

Meaning
the outward signs, features, or objects associated with a role, event, or status
Example
The king appeared with all the trappings of royalty.
C1 adjective /ˌtɒpsi ˈtɜːvi/

topsy-turvy

Meaning
in a state of confusion, disorder, or upside down
Example
The sudden announcement left the office in a topsy-turvy state.
C1 noun /taɪˈreɪd/

tirade

Meaning
a long, angry, or critical speech
Example
The manager launched into a tirade about poor performance.
C1 noun /ˈtrɛmər/

tremor

Meaning
a slight shaking movement in a person’s body or in the ground
Example
A small tremor was felt before the earthquake.
C1 noun /ˈtriːkəl/

treacle

Meaning
A thick, sweet syrup; excessively sentimental speech or writing.
Example
She poured treacle over the pancakes.