- Thorn-apple
- Thornless
- Thorough-going
- Thoroughly
- Thorpe
- Thought-reader
- Thoughtlessness
- Thousand
- Thousand fold
- Thousand millions
- Thralldom
- Thrash out
- Threadbare
- Thready
- Threatening
- Thunderbolt
- Three rhythms in music
- Three ring circus
- Topcoat
- Three-cornered
- Three-dimensional
- Three-ply
- Threshing corn
- Threshing floor
- Thrice
- Thrift
- Thriftiness
- Thrills and spills
- Thrive
- Thro
- Tie
- Throb
- thrombocytopenia
- Thrombosis
- Thrombus
- Through thick and thin
- Throw oneself on
- Throw up ones eye
- Throwing out
- Thrown
- Throws
- Thrusting
- Thulam
- Thumbnail
- Thunchathezhuthachan
- Thundering
- Thunderstorm
- Thurification
- Thwarting
- Thymelaea hirsuta
- Tibial
- Ticket collector
- Ticking
- Tickled to death
- Tidal
- Tiddly-winks
- Tide-gate
- Tide-gauge
- Tidiness
- Tie and dye
- Tie-up
- Tied
- Tier
- Tiffin
- Tight
- Tightfisted
- Tightly
- Tiles
- Till the cows come home
- Tiller
- Timber
- Timber tree
- Timbrel
- Time and motion
- Time is money
- Time out of mind
- Time sharing
- Time slicing
- Time-consuming
- Time-honoured
- Time-lag
- Time-zone
- Timeglass
- Timeless
- Timeliness
- Timeout
- Timid person
- Timocracy
- Tin
- Tin pot
- Tin-opener
- Tinct
- Tinged
- Tinner
- Tinsel
- Tinselled
- Tiny wall
- Tip
- Tipsify
- Tipster