10 letters
- tendresses12
- testudines13
- tetrahedra13
- thereafter15
- thereunder15
- threadiest13
- threadless14
- threatened14
- threatener13
- thunderers15
- transducer16
- transduces16
- transected15
- transferee14
- transfused16
- transmuted16
- transmutes15
- transudate13
- transverse15
- trapnested15
- treasurers11
- treasuries11
- treenwares14
- truantries12
- truenesses12
- turtlehead15
- ultradense14
- unattested13
- undereaten14
- underneath16
- underparts16
- underrated14
- underrates13
- underreact16
- undershirt15
- understate13
- understeer13
- undertaker17
- undertakes17
- undertaxes20
- underwater16
- undeterred14
- unfathered18
- unfettered16
- unlettered14
- unreadiest13
- unreserved17
- unreserves16
- unrestored13
- unsheathed17
- unsheathes16
- unsteadier13
- unsteadies13
- unstressed13
- untethered15
- unthreaded16
- unwreathed18
- unwreathes17
- usherettes13
- utterances15
- watersheds16
- westerners14