10 letters
- pyrethrins18
- pyrethrums21
- pyrrhotite17
- ramosities13
- rapidities14
- rebaptisms19
- reemphasis18
- restraints11
- retransmit14
- rheumatics19
- rheumatism19
- rhymesters17
- rhythmists19
- riderships16
- rimosities13
- ritualisms15
- ritualists12
- rulerships17
- ruralities12
- rusticates14
- sapidities14
- sapphirine19
- saprophyte20
- scrappiest19
- scrimpiest19
- scriptures17
- seismicity18
- seminarist14
- separatism16
- separatist13
- serigraphs17
- serigraphy19
- sestertium14
- shipfitter18
- shipmaster18
- shirtmaker19
- shirttails13
- shirtwaist15
- shrimpiest18
- similarity16
- skirmisher19
- slipstream17
- smatterers13
- smitheries15
- smutchiest19
- spaghettis17
- sparsities13
- spasticity18
- spearmints17
- spermaries16
- spermatids17
- spermatium20
- sphericity20
- spiritisms16
- spiritists13
- spirituals15
- spirometry18
- sputterers14
- spymasters18
- squirmiest23
- starchiest15
- starfruits14
- statuaries11
- steamships18
- stimulates15
- stipulates15
- straighter14
- strathspey17
- stratifies13
- streamiest13
- strictures14
- striptease13
- stroppiest16
- subprimate20
- summitries17
- superfarms20
- superfirms20
- superheats16
- superhypes21
- superminis18
- superpimps23
- superports17
- supersharp19
- supersmart17
- superstars14
- superstate14
- supertight18
- suppertime20
- supporters17
- suppurates18
- suretyship18
- surrealism15
- surrealist12
- swarthiest15
- sweatshirt15
- sybaritism18
- sympathies20
- sympathins21
- sympathise20
- sympathize29
- sympatries18
- systematic18
- tanistries11
- tapestries13
- termitaria13
- terrariums14
- tertiaries10
- tessituras11
- therapists15
- therapsids16
- thermistor15
- theurgists15
- thirstiest12
- thrummiest19
- thyristors14
- timpanists17
- titularies12
- tracheitis15
- trailerist11
- traitoress10
- transmutes15
- transpires14
- trapezists22
- trapeziums26
- traumatise14
- treasuries11
- triarchies15
- trichiases15
- trichiasis15
- trimesters13
- tripartite13
- tristearin11
- tritheisms15
- tritheists12
- triturates11
- triumphant20
- triunities12
- truantries12
- trumperies17
- trumpeters17
- tryptamine19
- tumidities15
- tunesmiths17
- tutorships16
- tympanists19
- tympanites19
- typescript21
- uintahites14
- unhappiest20
- upmanships23
- upperparts20
- uppitiness18
- uppityness20
- urethritis13
- ytterbiums19
- zitherists21