11 letters
- splendidest18
- springtides18
- squalidness24
- staidnesses13
- staphylinid21
- stolidities13
- streamsides15
- stridencies16
- stridulated15
- stridulates14
- stupidities16
- subacidness20
- subdividers21
- subdividing24
- subsidences20
- subsidising19
- subsidizers25
- subsidizing28
- sulfonamide21
- superfluids21
- superoxides23
- taradiddles15
- tarradiddle15
- taxidermies22
- taxidermist22
- teethridges16
- tenebrionid17
- tepidnesses16
- tetraploids16
- tetraploidy18
- thalidomide19
- thyroiditis16
- tiddlywinks24
- timidnesses16
- tolbutamide20
- torpidities15
- torridities12
- trapezoidal25
- trepidation16
- triploidies16
- trisulfides17
- tuberculoid21
- turbidities16
- turgidities15
- tyrannicide19
- tyrocidines18
- unavoidable22
- unavoidably24
- undecidable22
- underbidder19
- unidiomatic20
- vaginitides19
- validations18
- vapidnesses20
- veratridine17
- veridically23
- videography25
- videophiles22
- videophones22
- videotaping22
- vinylidenes21
- viridescent20
- viscidities19
- vividnesses21
- widdershins19
- widemouthed22
- widowerhood21
- wintertides16
- zidovudines28