- The uninitiated
- The upper ten thousand
- The vale of tears
- The vicar of christ
- The vitals
- Theocratical
- Theologian
- Theoretically
- Theorization
- Theorize
- Theory of evolution
- Therapeutic
- Therapeutist
- There are no flies on
- Thermophile
- These
- They are off
- Thiamine
- Thick
- Thick-headed
- Thick-skulled
- Thigh
- This-worldly
- Tho
- Thoma
- 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
- thrombocytopenia
- Thrombosis
- Thrombus
- Through thick and thin
- Throw oneself on
- Throw up ones eye
- Throwing out
- Thrown
- Throws
- Tibial
- Ticket collector
- Ticking
- Tickled to death
- Tidal
- Tiddly-winks
- Tide-gate
- Tide-gauge
- Tidiness
- Tie and dye
- 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
- Tinged
- Tinner
- Tinsel
- Tinselled
- Tiny wall
- Tip
- Tipsify
- Tipster
- Tittle-tattle
- To fast
- To a tee
- To analyse
- To assemble
- To assume
- To assume a shape
- To be disgusted
- To be embarrassed
- To be enraged
- To be entertained
- To be enticed
- To be estinguished
- To be expelled
- To be heaped up
- To be heared
- To be impaled
- To be mixed