13 letters
- selectiveness22
- sensitiveness19
- separableness21
- servilenesses19
- sincerenesses18
- sizablenesses27
- strangenesses17
- suasivenesses19
- sublimenesses22
- subtilenesses19
- superableness22
- supremenesses21
- talkativeness23
- teachableness23
- temperateness20
- tenablenesses19
- tentativeness19
- teratogeneses16
- teratogenesis16
- thinkableness25
- toothsomeness19
- tractableness21
- tumorigeneses20
- tumorigenesis20
- tunablenesses20
- unawarenesses19
- venerableness23
- verbosenesses21
- veritableness22
- versatileness19
- visiblenesses22
- volublenesses24
- wearisomeness20
- welcomenesses24
- wholesomeness23
- winsomenesses21
- woebegoneness23
- worrisomeness20