13 letters
- resistibility19
- retroactivity22
- reversibility23
- sacrosanctity22
- saprogenicity24
- sinterability20
- solderability21
- spreadability23
- squeezability38
- stereotypical22
- stylelessness18
- stylishnesses19
- stylistically23
- stylographies23
- superactivity26
- superfluidity25
- superhumanity26
- supermajority31
- supersubtlety24
- survivability28
- synchronicity27
- syndactylisms26
- theatricality21
- triangularity20
- typefoundings27
- typicalnesses23
- typifications25
- typographical29
- typologically28
- tyrannosaurus19
- ultravirility22
- underactivity25
- unfamiliarity24
- unknowability29
- unpunctuality27
- unreliability22
- unsociability24
- unsuitability22
- unworkability28
- upgradability26
- verifiability26
- vulnerability26
- zygodactylous34