1. Dark and dismal as of the rivers Acheron and Styx in Hades
   "in the depths of an Acheronian forest"
   - Acherontic, Stygian

See also: Acheron, dark

• thirty-six
• thirty-sixth
• thirty-something
• thirty-third
• thirty-three
• thirty-two
• Thiruvananthapuram
• this
• this evening
• this night
• thistle
• thistledown
• thistlelike
• thistly
• thither
• thitherto
• thitherward
• thixotropic
• thixotropy
• Thlaspi
• Thlaspi arvense
• ThM
• tho'
• thole
• tholepin