| Term | Definition |
| topography | physical features of a region |
| torpor | sluggishness |
| torrent | flood |
| torrid | passionate |
| torso | human trunk |
| tortuous | winding |
| totter | move unsteadily |
| touchstone | stone used to test the fineness of gold alloys |
| touchy | sensitive |
| tout | praise |
| toxic | poisonous |
| tract | region of land |
| tractable | docile |
| traduce | expose to slander |
| tranquility | peace |
| transcendent | surpassing |
| transcribe | copy |
| transgression | violation of law |
| transient | momentary |
| transition | going from one state of action to another |
| translucent | partly transparent |
| transparent | easily detected |
| transport | strong emotion |
| trappings | decorative ornaments |
| traumatic | pertaining to injury caused by violence |
| travail | painful physical |
| transverse | go through or across |
| travesty | dressed to ridicule |
| treacly | sticky sweet |
| treatise | article treating a subject systematically and thoroughly |
| trek | travel |
| tremor | trembling |
| tremulous | trembling |
| trepidation | fear |
| trespass | unlawful entrance |
| tribute | mark of respect |
| trifling | trivial |
| trigger | set off |
| trinket | knickknack |
| trite | hackneyed |
| trivial | unimportant |
| trough | container for feeding farm animals |
| truculence | aggressiveness |
| truism | self evident truth |
| truncate | cut the top off |
| tryst | meeting |
| tumult | commotion |
| tundra | arctic, treeless |
| turbid | muddy |
| turbulence | state of violence |
| turgid | swollen |
| turmoil | great commotion |
| turncoat | traitor |
| turpitude | depravity |
| tutelage | training |
| tycoon | wealthy leader |
| typhoon | tropical hurricane |
| tyranny | cruel government |
| tyro | beginner |
| ubiquitous | being everywhere |