- Tetrabasic
- Textbook
- Textured
- Thalassemia
- Thaliparamba
- Thallium
- Thank god
- Thank you for
- Thank you for nothing
- Thankful
- Thankless
- Thanks to
- The other day
- The other way around
- The parts
- The past
- The penalty of
- The pick of the bunch
- The pink
- The pit of one's stomach
- The pope
- The ultimate
- The unacceptable face of
- Theistically
- Thenceforward
- Theodolite
- Theodolitic
- Theological
- Theophanic
- Theophany
- Theoretician
- Theory
- Theosophic
- There is no saying
- Thermoluminiscent
- Thermometer
- Thermomter
- Thermonuclear
- Thermostat
- Thew
- They
- Thick end of the stick
- Thick skin
- Thickening
- Thickness of voice
- Thicko
- Thieve
- Thievery
- Thieves
- Thievish
- Thighless
- Thinner end
- Third force
- Third party insurance
- Third time
- Thirstiness
- Thirsty
- Thirsty person
- Thirteen
- Thirunavaya
- This
- This and that
- Thoughtlessly
- Thoughts
- Thourough-fare
- Thoutlessness
- Thrashed grain
- Thrashing
- Thrashing machine
- Threaten
- Threateningly
- 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