8 letters
- sinister9
- sintered10
- sissiest8
- sistered9
- sixteens16
- siziness18
- slimiest12
- slimness13
- smidgens15
- smidgins15
- smithies13
- snippets15
- sonsiest9
- specimen18
- speeding15
- speisses11
- spenders13
- spermine15
- spiciest14
- spikiest15
- spindles14
- spiniest12
- spinless13
- spinnies13
- spinster12
- spiremes14
- spiriest11
- spirited12
- splinted14
- spondees13
- sprinted13
- spumiest15
- stampede15
- standees10
- stapedes12
- steadies9
- steapsin12
- steepens12
- steeping14
- steepish13
- stemless12
- stemsons12
- stenosed10
- stenoses9
- stenosis9
- stepdame15
- stepsons12
- stepwise14
- stibines12
- stipends13
- stipites11
- stressed9
- sudsiest10
- suspends14
- suspense13
- syenites11
- syndeses12
- syndesis12
- tameness12
- tempests14
- tenesmic15
- tenesmus13
- teniases9
- teniasis9
- tennises10
- tideless10
- tiderips12
- tidiness10
- timeless12
- timeline13
- timidest12
- tininess10
- tinseled11
- tipsiest11
- topsides12
- trendies10
- trimness12
- trisemes11
- unpitied14
- untidies11
- veiniest13
- vitesses12
- wideness13
- wimpiest17
- windiest13
- wiseness12
- wispiest14