The List
There are 1094 4 letter words with S as the last letter. The highest scoring is ZZZS at 31 points in Scrabble. 13 of them contain no vowel at all: CWMS, DRYS, GYMS, GYPS, HYPS, LYMS, among others.
AAHSAALSABASABBSABOSABYSACESACTSADDSADOSAGASAGESAHISAIASAIDSAILSAIMSAINSAIRSAITSAKASAKESALASALBSALESALFSALLSALMSALPSALTSALUSAMASAMESAMISAMPSAMUSANASANDSANESANISANNSANTSAPESAPOSAPPSAPTSARBSARCSARDSARESARFSARISARKSARMSARTSASKSASPSATESAUASAUFSAUKSAVASAVESAVOSAWESAWKSAWLSAWNSAXESAXISAYESAYUSBAASBACSBADSBAGSBALSBAMSBANSBAPSBARSBASSBATSBAYSBEDSBEESBEGSBELSBENSBETSBEYSBIASBIBSBIDSBIGSBINSBIOSBITSBOASBOBSBODSBOGSBOHSBOISBOKSBOOSBOPSBORSBOSSBOTSBOWSBOYSBRASBRISBROSBRUSBUBSBUDSBUGSBUMSBUNSBURSBUSSBUTSBUYSBYESCAASCABSCADSCAGSCAMSCANSCAPSCARSCATSCAWSCAYSCEASCEESCELSCENSCEPSCESSCHASCHISCIDSCIGSCITSCOBSCODSCOGSCOLSCOMSCONSCOOSCOPSCORSCOSSCOTSCOWSCOYSCRISCRUSCUBSCUDSCUESCUPSCURSCUSSCUTSCWMSDABSDADSDAESDAGSDAHSDAISDAKSDALSDAMSDANSDAPSDAWSDAYSDEBSDEESDEGSDELSDENSDEUSDEVSDEWSDEYSDIBSDIESDIFSDIGSDIMSDINSDIPSDISSDITSDIVSDOBSDOCSDODSDOESDOGSDOHSDOLSDOMSDONSDOOSDOPSDORSDOSSDOTSDOWSDOYSDRYSDSOSDUBSDUDSDUESDUGSDUNSDUOSDUPSDYESDZOSEANSEARSEATSEAUSEBBSECOSECUSEDHSEELSEFFSEFTSEGGSEGISEGOSEIKSEKESELDSELFSELKSELLSELMSELTSEMESEMFSEMOSEMUSEMYSENDSENESENGSEONSEPOSERASERESERGSERKSERNSEROSERRSESESESTSETASETHSEUKSEVESEVOSEWESEWKSEWTSEXESEYASEYESFAASFABSFADSFAHSFANSFARSFATSFAWSFAYSFEDSFEESFEGSFEHSFEISFEMSFENSFESSFETSFEUSFEWSFEYSFIBSFIDSFIGSFILSFINSFIRSFITSFLUSFOBSFOESFOGSFONSFOPSFOSSFOUSFOYSFRASFRISFROSFUBSFUDSFUGSFUMSFUNSFURSFUSSGABSGADSGAESGAGSGAKSGALSGAMSGANSGAPSGARSGATSGAUSGAWSGAYSGEDSGEESGELSGEMSGENSGEOSGERSGETSGHISGIBSGIDSGIESGIGSGINSGIOSGIPSGITSGJUSGNUSGOASGOBSGODSGOESGONSGOOSGOSSGOVSGOYSGRISGUBSGUESGULSGUMSGUNSGUPSGURSGUTSGUVSGUYSGYMSGYPSHADSHAESHAGSHAHSHAMSHAOSHAPSHASSHATSHAWSHAYSHEHSHEMSHENSHEPSHERSHETSHEWSHEYSHIESHIMSHINSHIPSHISSHITSHOASHOBSHODSHOESHOGSHOHSHOLSHOMSHONSHOPSHORSHOSSHOTSHOWSHOYSHUBSHUESHUGSHUISHUMSHUNSHUPSHUSSHUTSHYESHYPSIBISICESICHSIDESIGGSILKSILLSIMPSINGSINKSINNSIONSIRESIRISIRKSISMSISOSITASIWISJABSJAGSJAKSJAMSJAPSJARSJASSJAWSJAYSJEESJESSJETSJEWSJIBSJIGSJINSJOBSJOESJOGSJOLSJORSJOSSJOTSJOWSJOYSJUDSJUGSJUTSKAASKABSKAESKAFSKAISKAKSKANSKATSKAWSKAYSKEASKEBSKEDSKEFSKEGSKEKSKENSKEPSKETSKEYSKHISKIDSKIFSKINSKIPSKIRSKISSKITSKOASKOBSKOISKONSKOPSKORSKOSSKOWSKRISKUESKVASKYESKYUSLABSLACSLADSLAGSLAHSLAMSLAPSLARSLASSLATSLAVSLAWSLAYSLEASLEESLEGSLEISLEKSLENSLEPSLESSLETSLEYSLIASLIBSLIDSLIESLIGSLINSLIPSLITSLOBSLODSLOGSLOOSLOPSLOSSLOTSLOUSLOWSLOYSLUDSLUESLUGSLUMSLURSLUVSLYESLYMSMAASMACSMADSMAESMAGSMAKSMALSMAMSMANSMAPSMARSMASSMATSMAWSMAYSMEDSMEESMEGSMELSMEMSMESSMETSMEUSMEWSMHOSMIBSMICSMIDSMIGSMILSMIPSMIRSMISSMNASMOASMOBSMOCSMODSMOESMOGSMOLSMOMSMONSMOOSMOPSMORSMOSSMOTSMOUSMOWSMOYSMUDSMUGSMUMSMUNSMUSSMUTSMYCSNABSNADSNAGSNAMSNANSNAOSNAPSNATSNAYSNEBSNEDSNEFSNEGSNEKSNEPSNESSNETSNEWSNIBSNIDSNIESNILSNIMSNIPSNITSNOBSNODSNOESNOGSNOMSNOUSNOWSNOYSNUBSNUNSNURSNUTSNYASNYESOAFSOAKSOARSOATSOBASOBESOBISOBOSOCASODASODDSODESOFFSOHMSOIKSOILSOKASOKESOLDSOLESOLMSONESONOSONUSOOFSOOHSOOMSOONSOOPSOOTSOPESOPTSOPUSORBSORCSORDSORESORFSORTSOSESOUDSOUKSOUPSOURSOUTSOWESOWLSOWNSOWTSOXESOYESPACSPADSPAHSPAISPALSPAMSPANSPAPSPARSPASSPATSPAVSPAWSPAYSPEASPECSPEDSPEESPEGSPEHSPELSPENSPEPSPETSPEWSPHISPHOSPIASPICSPIESPIGSPINSPIPSPIRSPITSPLUSPOASPODSPOISPOLSPOMSPONSPOOSPOPSPOSSPOTSPOWSPROSPRYSPSISPUBSPUDSPUGSPULSPUNSPUPSPURSPUSSPUTSPUYSPYASPYESQATSQINSRADSRAGSRAHSRAISRAMSRAPSRATSRAVSRAWSRAYSREBSRECSREDSREESREFSREGSREHSREISREMSRENSREOSREPSRETSREVSREWSRHOSRHUSRIASRIBSRIDSRIFSRIGSRIMSRINSRIPSRITSROBSROCSRODSROESROKSROMSROOSROTSROWSRUBSRUCSRUDSRUESRUGSRUMSRUNSRUTSRYASRYESSABSSACSSADSSAGSSAISSALSSAMSSANSSAPSSARSSASSSAVSSAWSSAYSSEASSECSSEESSEGSSEISSELSSENSSEPSSERSSESSSETSSEWSSEYSSHESSIBSSICSSIESSIMSSINSSIPSSIRSSISSSITSSKASSKISSOBSSOCSSODSSOGSSOHSSOLSSOMSSONSSOPSSOSSSOTSSOUSSOVSSOWSSOYSSPASSRISSUBSSUDSSUESSUGSSUKSSUMSSUNSSUPSSUQSSUSSSYESTABSTADSTAESTAGSTAISTAKSTAMSTANSTAOSTAPSTARSTASSTATSTAUSTAVSTAWSTAYSTEASTECSTEDSTEESTEFSTEGSTELSTEMSTENSTETSTEWSTHISTHUSTICSTIDSTIESTIGSTIKSTILSTINSTIPSTOCSTODSTOESTOGSTOMSTONSTOPSTORSTOSSTOTSTOWSTOYSTRESTSKSTUBSTUGSTUISTUMSTUNSTUPSTUTSTWASTWOSTYESTYGSUDOSUEYSUFOSUGHSUKESULESULUSUMPSUMUSUNISUPASURBSURDSURESURNSURPSURUSUSESUTASUTESUTISUTUSUVASVACSVAESVAGSVANSVARSVATSVAUSVAVSVAWSVEESVERSVETSVIASVIBSVIDSVIESVIGSVIMSVINSVOESVOLSVORSVOWSVUGSVUMSWABSWADSWAESWAGSWAISWANSWAPSWARSWATSWAWSWAYSWEBSWEDSWEESWELSWEMSWENSWETSWEYSWHYSWIGSWINSWISSWITSWOESWOFSWOGSWOKSWONSWOOSWOPSWOTSWOWSWUDSWUSSWYESWYNSYADSYAGSYAHSYAKSYAMSYAPSYAWSYAYSYEASYENSYEPSYEWSYIDSYINSYIPSYOBSYODSYOKSYOUSYOWSYUGSYUKSYUPSYWISZAGSZAPSZEASZEDSZEESZEKSZELSZEPSZHOSZIGSZINSZIPSZITSZOLSZOOSZZZS