10 letters
- shirtdress13
- sightseers14
- skyscraper22
- smiercases16
- spaceships21
- spacesuits17
- sparsities13
- sparteines14
- specialest17
- spermaceti19
- spermaries16
- sperrylite16
- sphalerite16
- sphericity20
- sphincters19
- spirochete18
- splashiest16
- spymasters18
- staircases13
- starchiest15
- starfishes15
- steamships18
- stepsister13
- stereopsis13
- storeships15
- strathspey17
- streetcars13
- stretchers15
- stretchier15
- stripeless14
- striptease13
- superheats16
- superraces17
- superstars14
- suretyship18
- sympathies20
- sympathise20
- sympatries18
- synaeresis13
- syncarpies19
- syncretise16
- tapestries13
- tesseracts13
- thearchies17
- therapists15
- therapsids16
- transpires14
- transships16
- trashiness13
- treasuries11
- trespassed14
- trespasser13
- trespasses13
- triarchies15
- trichiases15
- trierarchs15
- trierarchy17
- victresses17
- waitresses13
- watercress16
- whisperers18
- yeastiness13