10 letters
- sparsities13
- sparteines14
- spearmints17
- speediness15
- speedsters14
- sphalerite16
- sphincters19
- spinnerets15
- splashiest16
- spleeniest15
- sportiness14
- standishes14
- starfishes15
- steadiness12
- steaminess14
- steamships18
- steeliness12
- stepsister13
- stereopses13
- stereopsis13
- stingarees13
- storeships15
- straitness11
- stripeless14
- striptease13
- superheats16
- sustainers12
- sweatiness14
- synaereses13
- synaeresis13
- tamenesses14
- tapestries13
- tartnesses11
- tendresses12
- thaneships18
- therapists15
- therapsids16
- thinnesses14
- titanesses11
- transpires14
- transposes14
- transshape16
- transships16
- trashiness13
- trespassed14
- trespasser13
- trespasses13
- trignesses13
- trimnesses14
- truenesses12
- vespertine18
- waitresses13
- warinesses14
- wateriness14
- westernise14
- whatnesses16
- yeastiness13