| Term | Definition |
| tantrum | N. fit of petulance; caprice. |
| taper | N. candle. |
| tarantula | N. venomous spider. |
| tarry | V. delay; dawdle. |
| tatty | ADJ. worn and shabby; bedraggled. |
| taut | ADJ. tight; ready. |
| tautological | ADJ. needlessly repetitious. |
| tawdry | ADJ. cheap and gaudy. |
| taxonomist | N. specialist in classifying (animals, etc.). |
| tedium | N. boredom; weariness. |
| teetotalism | N. practice of abstaining totally from alcoholic drinks. |
| temerity | N. boldness; rashness. |
| temper | V. moderate; tone down or restrain; toughen (steel). |
| temperament | N. characteristic frame of mind; disposition; emotional excess. |
| temperate | ADJ. restrained; self-controlled; moderate in respect to temperature. |
| tempestuous | ADJ. stormy; impassioned; violent. |
| tempo | N. speed of music. |
| temporal | ADJ. not lasting forever; limited by time; secular. |
| temporize | V. act evasively to gain time; avoid committing oneself. |
| tenacious | ADJ. holding fast. |
| tenacity | N. firmness; persistence. |
| tendentious | ADJ. having an aim; biased; designed to further a cause. |
| tender | V. offer; extend; |
| tenet | N. doctrine; dogma; |
| tensile | ADJ. capable of being stretched. |
| tentative | ADJ. hesitant; not fully worked out or developed; experimental; not definite or positive. |
| tenuous | ADJ. thin; rare; slim; |
| tenure | N. holding of an office; time during which such an office is held; |
| tepid | N. lukewarm; |
| termination | N. end; |
| terminology | N. terms used in a science or art; |
| terminus | N. last stop of railroad; |
| terrestrial | ADJ. on or relating to the earth; |
| terse | ADJ. concise; abrupt; pithy; |
| tertiary | ADJ. third; |
| tesselated | ADJ. inlaid; mosaic; |
| testator | N. maker of a will; |
| testy | ADJ. irritable; short-tempered; |
| tether | V. tie with a rope; |
| thematic | ADJ. relating to a unifying motif or idea; |
| theocracy | N. government run by religious leaders; |
| theoretical | ADJ. not practical or applied; hypothetical; |
| therapeutic | ADJ. curative. |
| thermal | ADJ. pertaining to heat; |
| thespian | ADJ. pertaining to drama; |
| thrall | N. slave; bondage; |
| threadbare | ADJ. worn through till the threads show; shabby and poor; |
| thrifty | ADJ. careful about money; economical. |
| thrive | V. prosper; flourish. |
| throes | N. violent anguish. |
| throng | N. crowd; |
| throttle | V. strangle. |
| thwart | V. baffle; frustrate. |
| tightwad | N. excessively frugal person; miser; |
| tiller | N. handle used to move boat's rudder (to steer). |
| timbre | N. quality of a musical tone produced by a musical instrument; |
| timidity | N. lack of self-confidence or courage; |
| timorous | ADJ. fearful; demonstrating fear. |
| tipple | V. drink (alcoholic beverages) frequently. |
| tirade | N. extended scolding; denunciation; harangue. |
| titanic | ADJ. gigantic. |
| tithe | N. tax of one-tenth; |
| titillate | V. tickle. |
| title | N. right or claim to possession; mark of rank; name (of a book, film, etc.). |
| titter | N. nervous laugh; |
| titular | ADJ. having the title of an office without the obligations. |
| toady | N. servile flatterer; yes man. |
| toga | N. Roman outer robe. |
| tome | N. large volume. |