10 letters
- scrimshaws21
- seamanship19
- seastrands12
- sectarians14
- separatism16
- shadchanim22
- shamanisms19
- shamanists16
- shipmaster18
- shorthands16
- spearmints17
- spermatids17
- sphincters19
- spindrifts18
- staircases13
- stanchions17
- standishes14
- stannaries12
- starfishes15
- steamships18
- stramashes15
- straphangs18
- sympathins21
- tarantisms14
- thaneships18
- therapsids16
- thrashings17
- threadfins17
- trainbands16
- transcends16
- transshape16
- transships16
- transsonic15
- trashiness13
- undramatic19
- vanaspatis18
- washstands17