10 letters
- sleepiness15
- sleeveless16
- sleevelets16
- slenderest13
- slimnesses15
- smelteries14
- solenesses12
- sorenesses11
- sovranties15
- sparseness14
- sparteines14
- spleeniest15
- stableness15
- starveling18
- steadiness12
- steaminess14
- steeliness12
- stencilers15
- sterilants12
- stingarees13
- straitness11
- streamline15
- stressless11
- strifeless14
- stringless14
- stripeless14
- sultriness13
- surenesses12
- sustainers12
- svelteness16
- sweatiness14
- sweeteners14
- sylvanites18
- synaereses13
- synaeresis13
- tailenders13
- tallnesses13
- tamenesses14
- tartnesses11
- televiewer18
- tendresses12
- timesavers17
- titanesses11
- transverse15
- trashiness13
- travesties14
- trespasses13
- trignesses13
- trimnesses14
- truenesses12
- universals17
- unstresses12
- vainnesses16
- valentines17
- varletries15
- vastnesses15
- velveteens20
- venalities16
- venialness17
- ventilates16
- ventricles19
- veratrines15
- verbalists18
- vernalizes25
- vernissage17
- vespertine18
- vestiaries14
- victresses17
- vilenesses16
- virtueless16
- votaresses14
- waitresses13
- warinesses14
- wateriness14
- waterlines15
- wavinesses18
- westerlies14
- westernise14
- wirelesses14
- wisenesses14
- yeastiness13