- The last trump
- The letter sha
- The old serpent
- The old sod
- The one and the many
- The oppressed
- The other life
- The other way about
- The pentagon
- The period in which saturn travels in the 4th 7th and 10th signs of the zodiac
- The pit of the stomach
- The plant clerodendron siphonanthus
- The poor
- The sooner the better
- The stores
- The sun
- The supreme
- The sword
- The ten commandments
- The thing
- The whole
- The whole outward appearance
- The whys and wherefores
- Theatrically
- Thedolite
- Thematic
- Thematically
- Theme song
- There!
- Thereabouts
- Thereafter
- Thereby
- Thereon
- Theres no holding him
- Thermal reactor
- Thermic
- Thermo chemical
- Thermo chemistry
- Thermo magnetism
- Thermodynamic
- Thermogenous
- Thin muslin
- Thin root
- Think aloud
- Think highly
- Think on
- Think scorn of
- Think tank
- Think twice
- Thinly
- Tonsillitis
- This-worldly
- Tho
- Thoma
- Thorn-apple
- Thornless
- Thorough-going
- Thoroughly
- Thorpe
- Thought-reader
- Three-cornered
- Three-dimensional
- Three-ply
- Threshing corn
- Threshing floor
- Thrice
- Thrift
- Thriftiness
- Thrills and spills
- Thrive
- Thro
- Tie
- Throb
- Thrusting
- Thulam
- Thumbnail
- Thunchathezhuthachan
- Thundering
- Thunderstorm
- Thurification
- Thwarting
- Thymelaea hirsuta
- Tie-up
- Tied
- Tier
- Tiffin
- Tight
- Tightfisted
- Tightly
- Tiles
- Time-honoured
- Time-lag
- Time-zone
- Timeglass
- Timeless
- Timeliness
- Timeout
- Timid person
- Timocracy
- Tin