9 letters
- sentients11
- sentinels12
- serotines10
- servitude15
- seventies14
- shininess13
- siderites10
- sincerest13
- sinecures14
- sintering13
- sinusitis11
- sirenians11
- sirventes14
- sistering12
- skinniest15
- snideness12
- snivelers15
- souvenirs15
- spininess14
- spinneret14
- spinsters13
- squinnier21
- squinnies21
- squinters20
- squintier20
- squireens20
- stearines10
- steevings16
- sternites10
- sternness11
- sternsons11
- stoniness11
- stressing12
- streusels11
- suaveness15
- suavities14
- suberises13
- subseries13
- subserves17
- sunniness13
- sunscreen15
- sunshines14
- sunstones12
- supersets13
- supervise17
- surliness12
- suspenser14
- sustainer11
- syneresis12
- tanneries11
- tenseness11
- tensioner11
- tensities10
- tenuities11
- terseness10
- tessiture10
- testiness10
- tigresses11
- tinniness12
- tipsiness13
- tiredness11
- tirrivees13
- tressiest9
- tressures10
- triennium15
- trismuses13
- triteness10
- trussings13
- tunnelers13
- turneries11
- undersets12
- undresses12
- uneasiest11
- unevenest16
- unfitness15
- uninvited17
- unionises12
- unionists12
- unitizers20
- universes15
- unreeving18
- unrevised16
- unsterile12
- unstrings14
- untrusses12
- unvisited16
- uraninite12
- utilisers11
- uveitides15
- uveitises14
- varieties13
- varsities13
- veinulets16
- venetians15
- venturers15
- venturing18
- versifies16
- vesturing17
- virescent17
- votresses13
- witnesses13