11 letters
- sonications16
- sophistries16
- speciations18
- spinosities15
- spinsterish17
- spiritistic17
- spoonerisms18
- springiness18
- statoscopes17
- stenotypist17
- stringiness15
- supersonics19
- supertonics19
- syncretists17
- thirstiness14
- topnotchers20
- topocentric21
- topstitches19
- torpidities15
- totipotency20
- transection16
- transitions13
- transposons16
- trichinoses17
- trichinosis17
- tricksiness19
- trisections15
- tritheistic16
- vincristine20
- viscosities18
- voiceprints22
- vorticities18