10 letters
- solidarist12
- solitaires11
- solitaries11
- solvations16
- somersault15
- sonorities11
- sopraninos15
- sororities10
- sortitions11
- sousaphone17
- sovranties15
- spaceports19
- spangliest17
- sparkliest18
- sparsities13
- sparteines14
- spearmints17
- specialist17
- speciation17
- speculator18
- spindliest16
- spinsterly17
- spiritless14
- spirituals15
- spirituous15
- splendours17
- splendrous17
- splurgiest17
- spoilsport17
- spoliating17
- spoliation15
- spoliators14
- sponsorial15
- spoonerism17
- sportiness14
- sporulated16
- sporulates15
- sprawliest17
- springiest16
- springtail17
- spritsails14
- stainproof17
- standpipes18
- stationers11
- staurolite12
- sterilants12
- stipulates15
- stipulator15
- stonecrops17
- stoppering19
- stramonies14
- strappings19
- striations11
- striplings17
- strippable20
- stroppiest16
- subalterns16
- sublations16
- subreption18
- suctorians15
- sudatories12
- sulfonates16
- sultriness13
- supercoils18
- supercools18
- supergiant17
- superminis18
- supernovas19
- superpimps23
- superplane19
- superports17
- supersonic18
- supertonic18
- supination16
- supinators15
- supplanted20
- supplanter19
- suppletion19
- suppletory20
- suppliance22
- suppliants19
- supplicant22
- supplicate21
- supporters17
- supporting20
- supportive21
- supposable21
- suppurates18
- supraoptic20
- surrealist12
- sustainers12
- tablespoon18
- tailorings14
- tanistries11
- tarpaulins16
- teliospore14
- tendrilous14
- terpineols15
- titularies12
- toleration12
- toluidines14
- tonalities12
- tonoplasts15
- topsoiling17
- torosities10
- tourmaline16
- trampoline18
- transpires14
- transposed15
- transposes14
- transposon15
- treasonous12
- trialogues14
- triennials13
- trinomials15
- triskelion16
- troopships18
- tropopause17
- turnstiles13
- turophiles17
- tyrosinase13
- ulceration16
- ultrasonic16
- underplots17
- unhappiest20
- unifoliate16
- universals17
- unpastoral16
- unstoppers18
- unstrapped19
- upholsters17
- upperparts20
- uppitiness18
- uppityness20
- upstepping23
- uraninites13
- urbanities15
- urinalyses15
- urinalysis15
- urinations13
- urogenital15
- urokinases16
- urologists14
- uroscopies17
- usurpation16
- utopianism18
- vanitories15
- violations16
- waistlines15
- waitperson17
- zoolatries20