10 letters
- sphincters19
- spinnerets15
- sportiness14
- stonecrops17
- strictures14
- subreption18
- subsection18
- subtropics20
- suctorians15
- sunporches20
- supercoils18
- supermicro20
- superports17
- superscout18
- supersonic18
- superstock21
- superstore14
- supertonic18
- supervisor18
- supinators15
- supporters17
- surjection24
- surprinted16
- suspecting20
- suspension16
- tensioners12
- thorniness14
- torridness12
- touchiness17
- transpires14
- transsonic15
- trisectors13
- truncheons18
- turnstones13
- uncrossing18
- underspins17
- unneurotic17
- unripeness16
- unscripted19
- unstoppers18
- uroscopies17