- The early bird catches the worm
- The east
- The eleven
- The eternal
- The fault of not mentioning the essential
- The like of you
- The finer points of
- The first flight
- The first person
- The first world war
- The fish
- The flood
- The four freedoms
- The game is not worth the candle
- The gilt is off
- The good
- The maker
- The male of plants
- The middle of the eight directions of the compass
- The most high
- The new rich
- The nineties
- The object desired or longed for
- The prerils of
- The racing world
- The real thing
- The reverend gentleman
- The rights and wrongs
- The root of sweet-rush
- The rope
- The running
- The ultimate
- The unacceptable face of
- Theistically
- Thenceforward
- Theodolite
- Theodolitic
- Theological
- Theophanic
- Theophany
- Theoretician
- Theory
- Theosophic
- There is no saying
- There is room for improvement
- There you are
- Therefor
- Therefrom
- Thermal
- Thermal equator
- Thimble-rig
- Thin skinned
- Thing
- Think again
- Think big
- Think fit
- Think little
- Think well of
- Thinker
- Thiswise
- Thither
- Thiyyas
- Tholas
- Thong
- Thorium
- Thoroughfare
- Thoroughness
- Those
- Thou
- Though
- Thoughtful
- Three times five
- Three-quarter
- Threefold
- Threesome
- Threnody
- Thriller
- Thrips
- Throat-pain
- Throbbing
- Throe
- Thrust
- Thruster
- Thud
- Thug life
- Thumb-mark
- Thumburu
- Thunder
- Thunderous
- Thursday
- Thwart
- Thymol seeds
- Thyroid
- Thyroxin
- Tied to one's mother's apron strings
- Tied-house
- Tiff
- Tiger by the tail
- Tiger skin
- Tight corner of spot