10 letters
- stupidness16
- sturdiness13
- subindexes23
- superoxide22
- supersedes15
- supersexes21
- supineness16
- suspenders16
- suspension16
- suspensive19
- suspicions18
- swinepoxes24
- tendresses12
- tenesmuses15
- terpenoids15
- testudines13
- tidinesses12
- tininesses12
- toluidines14
- truenesses12
- tweediness15
- unassisted13
- unexpected26
- unsteadies13
- unstressed13
- untidiness14
- uppitiness18
- venosities15
- videotexes22
- voidnesses16
- widenesses15