The List
There are 478 4 letter words with S as the first letter. The highest scoring is SWIZ at 16 points in Scrabble. 8 of them contain no vowel at all: SCRY, SKRY, SKYF, SKYR, SPRY, SYNC, among others.
SAAGSABESABSSACKSACSSADESADISADOSADSSAFESAFTSAGASAGESAGOSAGSSAGYSAICSAIDSAILSAIMSAINSAIRSAISSAKESAKISALESALLSALPSALSSALTSAMASAMESAMPSAMSSANDSANESANGSANKSANSSANTSAPSSARDSARISARKSARSSASHSASSSATESATISAULSAUTSAVESAVSSAWNSAWSSAXESAYSSCABSCADSCAGSCAMSCANSCARSCAWSCOGSCOPSCOTSCOWSCRYSCUDSCUGSCULSCUMSCUPSCURSCUTSCYESEALSEAMSEANSEARSEASSEATSECHSECOSECSSECTSEEDSEEKSEELSEEMSEENSEEPSEERSEESSEGOSEGSSEIFSEIKSEILSEIRSEISSEKTSELDSELESELFSELLSELSSEMESEMISENASENDSENESENSSENTSEPSSEPTSERASERESERFSERKSERRSERSSESESESHSESSSETASETSSETTSEWNSEWSSEXTSEYSSHADSHAHSHAMSHANSHATSHAWSHAYSHEASHEDSHESSHETSHEWSHIMSHINSHIPSHIRSHIVSHMOSHODSHOESHOGSHOOSHOPSHOTSHOWSHRISHULSHUNSHUTSHWASIALSIBBSIBSSICESICHSICKSICSSIDASIDESIDHSIENSIESSIFTSIGHSIGNSIJOSIKASIKESILDSILESILKSILLSILOSILTSIMASIMISIMPSIMSSINDSINESINGSINHSINKSINSSIPESIPSSIRESIRISIRSSISSSISTSITESITHSITSSITZSIZESIZYSJOESKAGSKASSKATSKAWSKEESKEGSKENSKEOSKEPSKERSKETSKEWSKIDSKIMSKINSKIOSKIPSKISSKITSKOLSKRYSKUASKUGSKYFSKYRSLABSLAESLAGSLAMSLAPSLATSLAWSLAYSLEBSLEDSLEESLEWSLEYSLIDSLIMSLIPSLITSLOBSLOESLOGSLOPSLOTSLOWSLUBSLUESLUGSLUMSLURSMEESMEWSMIRSMITSMOGSMUGSMURSNABSNAGSNAPSNARSNAWSNEBSNEDSNEESNIBSNIGSNIPSNITSNOBSNODSNOGSNOTSNOWSNUBSNUGSNYESOAKSOAPSOARSOBASOBSSOCASOCKSOCSSODASODSSOFASOFTSOGSSOHOSOHSSOILSOJASOKESOLASOLDSOLESOLISOLOSOLSSOMASOMESOMSSOMYSONESONGSONSSOOKSOOLSOOMSOONSOOPSOOTSOPHSOPSSORASORBSORDSORESORISORNSORTSOSSSOTHSOTSSOUKSOULSOUMSOUPSOURSOUSSOUTSOVSSOWFSOWLSOWMSOWNSOWPSOWSSOYASOYSSPAESPAGSPAMSPANSPARSPASSPATSPAWSPAYSPECSPEDSPEKSPETSPEWSPIESPIFSPIKSPIMSPINSPITSPIVSPODSPOTSPRYSPUDSPUESPUGSPUNSPURSRISSTABSTAGSTAPSTARSTATSTAWSTAYSTEDSTEMSTENSTEPSTETSTEWSTEYSTIESTIMSTIRSTOASTOBSTOPSTOTSTOWSTUBSTUDSTUMSTUNSTYESUBASUBSSUCHSUDDSUDSSUEDSUERSUESSUETSUGHSUGOSUGSSUIDSUITSUKHSUKSSULKSULUSUMOSUMPSUMSSUMYSUNGSUNISUNKSUNNSUNSSUPESUPSSUQSSURASURDSURESURFSUSSSUSUSWABSWADSWAGSWAMSWANSWAPSWATSWAYSWEESWEYSWIGSWIMSWIZSWOBSWOPSWOTSWUMSYBOSYCESYEDSYENSYESSYKESYLISYNCSYNDSYNESYPESYPH