| Term | Definition |
| tonsure | shaving of the head, especially by person entering religious orders |
| topography | physical features of a region |
| torpor | lethargy; sluggishness; dormancy |
| torque | twisting force; force producing rotation |
| torrent | rushing stream; flood |
| torrid | passionate; hot or scorching |
| torso | trunk of statue with head and limbs missing; human trunk |
| tortuous | winding; full of curves |
| totter | move unsteadily; sway, as if about to fall |
| touchstone | stone used to test the fineness of gold alloys; criterion |
| touchy | sensitive; irascible |
| tout | publicize; praise excessively |
| toxic | poisonous |
| tract | pamphlet; a region of indefinite size |
| tractable | docile; easily managed |
| traduce | expose to slander |
| trajectory | path taken by a projectile |
| tranquility | calmness; peace |
| transcendent | surpassing; exceeding ordinary limits; superior |
| transcribe | copy |
| transfigure | transform outwardly, usually for the better; change in form or aspect |
| transgression | violation of law; sin |
| transient | momentary; temporary; staying for a short time |
| transition | going from one state of action to another |
| transitory | impermanent; fleeting |
| translucent | partly transparent |
| transmute | change; convert to something different |
| transparent | easily detected; permitting light to pass through freely |
| transpire | be revealed; happen |
| transport | strong emotion |
| trappings | outward decorations; ornaments |
| traumatic | pertaining to an injury caused by violence |
| travail | painful physical of mental labor; drudgery torment |
| traverse | go thorough or across |
| travesty | harshly distorted imitation; parody; debased likeness |
| treatise | article treating a subject systematically and thoroughly' |
| trek | travel; journey |
| tremor | trembling; slight quiver |
| tremulous | trembling; wavering |
| trenchant | forceful and vigorous; cutting |
| trepidation | fear; nervous apprehension |
| tribulation | distress; suffering |
| tribunal | court of justice |
| tribute | tax levied by a ruler; mark of respect |
| trident | three-pronged spear |
| trifling | trivial; unimportant |
| trigger | set off |
| trilogy | group of three workers |
| trinket | A small showy article; knickknack; baubles |
| trite | hackneyed; commonplace |
| trivia | trifles; unimportant matters |
| troth | pledge of good faith, especially in betrothal |
| trough | container for feeding farm animals; lowest point ( of a wave, business cycle, etc.) |
| truculence | aggressiveness; ferocity |
| truism | self evident truth |
| truncate | cut the top off |
| tryst | meeting |
| tumid | swollen; pompous; bombastic |
| tumult | commotion; riot; noise |
| tundra | rolling, treeless plain in Siberia and arctic North America |
| turbid | muddy; having the sediment disturbed |
| turbulence | state of violent agitation |
| tureen | deep dish for serving soup |
| turgid | swollen; distended |
| turmoil | great commotion and confusion |
| turncoat | traitor |
| turpitude | depravity |
| tutelage | guardian ship; training |
| tutelary | protective; pertaining to a guardianship |
| tycoon | A wealthy and powerful businessperson or industrialist; a magnate. |
| typhoon | tropical hurricane or cyclone |
| tyranny | oppression; cruel government |
| tyro | beginner; novice |
| ubiquitous | being everywhere; omnipresent |