9 letters
- superbank21
- superbest16
- superfans17
- superfast16
- superheat15
- superjets22
- supersafe16
- supersale14
- supersets13
- superstar13
- supinates14
- supremest16
- surceases13
- surpassed14
- surpasses13
- suspender15
- suspenser14
- suspenses14
- suspensor14
- sustainer11
- swartness13
- tarbushes15
- tenebrous14
- tenurable15
- terseness10
- tetanuses11
- transepts13
- transfuse14
- transpose13
- transudes12
- trapnests13
- treasures10
- tressures10
- tubenoses14
- tuberoses13
- unaptness15
- uncreates14
- undereats12
- underpass15
- underseas12
- undersets12
- undresses12
- uneasiest11
- unpressed15
- unspheres16
- unstabler15
- untrusses12
- upbearers16
- upsetters13
- upstaters13
- urbanises14
- urbanists14
- urbanites14
- urethanes13
- zebrasses21