10 letters
- serpentine15
- seventeens16
- severities14
- shapeliest16
- shinleaves18
- signalises14
- silentness13
- simpleness18
- singleness15
- singspiels17
- slanginess15
- sleaziness21
- sleepiness15
- slimpsiest17
- slinkiness17
- snappiness18
- sneakiness16
- spangliest17
- sparsities13
- sparteines14
- specialest17
- specialise17
- specialist17
- speediness15
- spindliest16
- spinnerets15
- spinneries15
- spiritless14
- splashiest16
- spleeniest15
- splenetics18
- spritsails14
- stableness15
- steadiness12
- steaminess14
- steeliness12
- steepening17
- stinginess14
- stripeless14
- supineness16
- suspensive19
- svelteness16
- sweatiness14
- sylvanites18
- tailpieces17
- tallnesses13
- tamenesses14
- televising18
- television16
- tenantless13
- thinnesses14
- tidinesses12
- timeliness15
- tininesses12
- titanesses11
- triennials13
- uneasiness13
- univalents18
- vainnesses16
- valentines17
- vastnesses15
- velleities16
- venalities16
- venialness17
- venosities15
- ventilates16
- vespertine18
- vespiaries17
- vestiaries14
- vigilantes18
- vilenesses16
- villainess17
- visionless16
- visualises16
- waistlines15
- wavinesses18
- wilinesses15
- yeastiness13
- zaninesses21