10 letters
- sanitaries11
- sanitarium15
- scampering22
- scarpering19
- seminarian15
- seminarist14
- separating16
- separation14
- separatism16
- septenarii14
- smaragdine17
- smaragdite16
- smartening17
- smattering16
- spattering16
- spearmints17
- speciating19
- spermatial17
- springiest16
- springtail17
- springtide17
- springtime19
- stammering19
- stampeding20
- steamering16
- sterigmata15
- streamings16
- supergiant17
- tarriances14
- termagants16
- termitaria13
- thiaminase16
- timberings19
- timesaving20
- tragedians14
- trailering14
- transpired15
- transpires14
- traversing17
- treasuring14
- trigeminal17
- triggerman18
- tristearin11
- upstirring17
- warranties14