10 letters
- stomachics21
- stonechats16
- storeships15
- stramonies14
- strategies12
- strathspey17
- streakiest14
- streamiest13
- streamlets14
- streamside14
- streetcars13
- streetlamp17
- stretchers15
- stretchier15
- striptease13
- stroppiest16
- superheats16
- supermacho22
- superstate14
- swarthiest15
- sweatshirt15
- sympathies20
- sympathise20
- sympatries18
- systematic18
- tachometer18
- taperstick20
- tapestried14
- tapestries13
- tautomeric17
- taximeters20
- tectonisms17
- telepathic19
- telophases16
- temporised17
- temporises16
- temporizes25
- terminates14
- tesseracts13
- testaceous14
- tetchiness16
- tetrameric16
- tetraspore13
- thaneships18
- thatchiest17
- thearchies17
- theocratic18
- theophanic21
- therapists15
- therapsids16
- thermistor15
- thermopile19
- thermosets15
- thermostat15
- thimerosal16
- thiophenes18
- threadiest13
- threesomes15
- throatiest12
- tightropes17
- timesavers17
- timescales17
- toothaches17
- tovariches19
- tovarishes16
- tracheitis15
- tracheoles16
- traitoress10
- trapezists22
- travesties14
- trehaloses13
- trematodes14
- tremolites14
- treponemas17
- trichiases15
- trichromat18
- trimesters13
- trisectors13
- tritheisms15
- tutorships16
- viscometer20