There are 638 eight-letter words containing A, O and 2S, https://www.bestwordlist.com/c/a/4/8letterwordswithaoss.htm ABOMASUS ABROSIAS ABSCONDS ABSOLVES ABUSIONS ACCOASTS ACIDOSES ACIDOSIS ACOSMISM ACOSMIST ADENOSES ADENOSIS ADIPOSES ADIPOSIS ADONISES ADVISORS AEROSATS AEROSOLS AGAROSES AGISTORS AGLOSSAL AGLOSSIA AGNOSIAS AGONISES AGONISMS AGONISTS AIRPOSTS AIRSHOTS AIRSHOWS AIRSTOPS ALASTORS ALECOSTS ALLSORTS ALPHOSIS ALTOISTS AMEIOSES AMEIOSIS AMITOSES AMITOSIS AMORISMS AMORISTS AMOROSAS AMOROSOS AMOSITES AMYLOSES ANEMOSES ANEMOSIS ANISOLES ANODISES ANOPSIAS ANOSMIAS ANSEROUS ANTIBOSS APOAPSES APOAPSIS APODOSES APODOSIS APOSTASY APOSTILS APOSTLES APPOSERS ARGOSIES AROUSALS AROUSERS ARSENOUS ARSONIST ARSONOUS ASBESTOS ASINICOS ASOCIALS ASPEROUS ASPERSOR ASSENTOR ASSERTOR ASSESSOR ASSHOLES ASSIENTO ASSIGNOR ASSISTOR ASSOILED ASSONANT ASSONATE ASSORTED ASSORTER ASSOTTED ASSURORS ASTHORES ASTOMOUS ASTONIES ASTONISH ASTOUNDS ASTROIDS ASYSTOLE ATISHOOS ATOMISES ATOMISMS ATOMISTS AUSFORMS AZOTISES AZYGOSES BARONESS BASOCHES BASSOONS BASSWOOD BASTIONS BATHOSES BIOASSAY BIOGASES BOASTERS BOBSTAYS BOMBASTS BONASSUS BONSELAS BOREASES BORSTALS BOSCAGES BOSKAGES BRASEROS BUSLOADS CABOOSES CAESIOUS CAISSONS CALLOSES CALYPSOS CANONESS CARASSOW CAROUSES CASEOSES CASSINOS CASSIOPE CASSOCKS CASSONES CASTOCKS CASTOFFS CAVESSON CELOSIAS CHAMISOS CHANSONS CLASSICO CLASSONS COALISES COALLESS COARSENS COARSEST COARSISH COASSIST COASSUME COASTERS COATLESS COLOSSAL CONTESSA CORSAGES CORSAIRS COSPLAYS COSSACKS COSTARDS COSTEANS COWGRASS CROSSARM CROSSBAR CROSSWAY CRUSADOS CURASSOW CYANOSES CYANOSIS DAMOSELS DAPSONES DASHPOTS DASYPODS DEASOILS DEPOSALS DISAVOWS DISLOADS DISPOSAL DOWLASES DROSERAS EARSHOTS EASTMOST ENOLASES ERASIONS ESCALOPS ESCOLARS ESPARTOS ESPOUSAL EVASIONS EXPOSALS FAMOUSES FASCISMO FASHIONS FASHIOUS FASTUOUS FIASCOES FLOTSAMS FOAMLESS FOGASHES FOOTSALS FORESAYS FORSAKES FOSSULAE FOUGASSE FUSAROLS GALOSHES GALOWSES GAOLLESS GASAHOLS GASHOUSE GASOHOLS GASWORKS GESTAPOS GIRASOLS GLASNOST GLOSSARY GLOSSINA GOALLESS GOLIASES GOSHAWKS GOSSAMER GROSSART HAPLOSES HAPLOSIS HARMOSTS HAROSETS HASSOCKS HASSOCKY HEXOSANS HOARSENS HOARSEST HOPSACKS HOSANNAS HOSTAGES HOUSESAT IMPASTOS ISAGOGES ISOAMYLS ISOBARES ISOBASES ISOBATHS ISOCHASM ISOGRAMS ISOLATES ISOLEADS ISOPACHS ISOSTACY ISOSTASY ISOTACHS JALOUSES KAROSHIS KAROSSES KOLBASIS KOLBASSA KOLBASSI KOMISSAR LACROSSE LACTOSES LASSLORN LASSOCKS LASSOERS LASSOING LATOSOLS LEASOWES LIAISONS LOAMLESS LOESSIAL LOPGRASS MADISONS MAESTOSO MAESTROS MAFIOSOS MALISONS MALTOSES MANNOSES MANSIONS MARGOSAS MARMOSES MASSICOT MASSOOLA MASTOIDS MAYORESS MESOSAUR MIASMOUS MOBCASTS MOCASSIN MOLASSES MORASSES MOSASAUR MOSCATOS MOSSBACK MOSSLAND MOUSAKAS MOUSSAKA NABOBESS NARCOSES NARCOSIS NAUSEOUS NONCLASS NONPASTS NOSEBAGS NOSEGAYS NOWCASTS OAKINESS ODALISKS ODYSSEAN OFFCASTS OILGASES OLESTRAS ONANISMS ONANISTS ONOMASTS ONSTEADS OQUASSAS ORALISMS ORALISTS ORATRESS ORGIASTS OROPESAS OSMIATES OSMUNDAS OSSARIUM OSSATURE OSSETRAS OSTEOMAS OSTMARKS OUBAASES OUTCASTS OUTCLASS OUTFASTS OUTGASES OUTLASTS OUTSAILS OUTSOARS OUTSPANS OUTSTAYS OUTTASKS OVALNESS OVERPASS OVERSEAS OXALISES OXIDASES OXYSALTS PAESANOS PAISANOS PAPOOSES PARASOLS PARISONS PASSADOS PASSBOOK PASSCODE PASSIONS PASSOUTS PASSOVER PASSPORT PASSWORD PASTITSO PATHOSES PEASCODS PERSONAS PHAROSES PLASMONS PODCASTS PODESTAS PORTASES POSAUNES POSTAGES POSTBAGS POSTBASE POTASHES POTASSAS POTASSES POTASSIC POUSADAS PRESOAKS PROSAISM PROSAIST PROSOMAS PROTASES PROTASIS PSAMMONS RASBORAS REASSORT REPOSALS RESEASON RESPONSA ROADLESS ROASTERS ROASTIES ROBUSTAS ROSACEAS ROSAKERS ROSALIAS ROSARIES ROSEBAYS ROSELLAS ROSEOLAS ROTGRASS ROUSSEAU SABATONS SABAYONS SABULOSE SABULOUS SACATONS SACCOSES SADIRONS SAFFRONS SAFROLES SAGOUINS SAGUAROS SAHUAROS SAKKOSES SALAMONS SALCHOWS SALIGOTS SALTATOS SAMOVARS SAMOYEDS SAMSHOOS SANDBOYS SANDHOGS SANDLOTS SANDSHOE SANDSOAP SANGOMAS SANTEROS SANTOKUS SANTOORS SANTOURS SAOUARIS SAPAJOUS SAPEGOES SAPONINS SAPOROUS SAPROBES SAPSAGOS SAPWOODS SARCODES SARCOIDS SARCOMAS SARGASSO SARGOSES SARODIST SASSOLIN SASSWOOD SAUROIDS SAUTOIRS SAVELOYS SAVIOURS SAVORERS SAVORIES SAVOROUS SAWBONES SAWHORSE SAXHORNS SAXONIES SCABIOSA SCABIOUS SCABROUS SCALADOS SCALLOPS SCANSION SCARIOSE SCARIOUS SCATOLES SCHOLARS SCOPULAS SCOTOMAS SCREAMOS SEABOOTS SEACOAST SEACOCKS SEAFOAMS SEAFOLKS SEAFOODS SEAFOWLS SEAHORSE SEAPORTS SEASCOUT SEASHORE SEASONAL SEASONED SEASONER SEAWORMS SECALOSE SECONALS SENATORS SENHORAS SENOPIAS SENSORIA SEPALOUS SEQUOIAS SEROVARS SERRANOS SESAMOID SFUMATOS SHACKOES SHADOOFS SHAHDOMS SHAKUDOS SHALLONS SHALLOPS SHALLOTS SHALLOWS SHAMOSIM SHAMPOOS SHATOOSH SHINOLAS SHOALEST SHOEPACS SHOPHARS SHORTIAS SHOWCASE SICARIOS SIGNORAS SINOPIAS SJAMBOKS SKATOLES SLAPSHOT SLIOTARS SNAPSHOT SNOTRAGS SNOWCAPS SNOWCATS SOAKAGES SOAKINGS SOAPDISH SOAPFISH SOAPIEST SOAPLESS SOAPSUDS SOARINGS SOCAGERS SOCCAGES SOCIATES SODALESS SODALIST SOFABEDS SOILAGES SOLACERS SOLANINS SOLANUMS SOLARISE SOLARISM SOLARIST SOLDADOS SOLVATES SOMATISM SOMATIST SOMEWAYS SONANCES SONDAGES SOOTHSAY SOPRANOS SORBATES SOROBANS SOSATIES SOULDANS SOUTANES SOUTHSAY SOWBACKS SOYBEANS SOYMEALS SPACIOUS SPADONES SPAMBOTS SPAROIDS SPARROWS SPATHOSE SPORRANS SPOUSAGE SPOUSALS SQUACCOS SQUALORS SQUAMOSE SQUAMOUS SQUARSON STALKOES STANNOUS STANZOES STARDOMS STARNOSE STAROSTA STAROSTY STARSPOT STASIMON STATIONS STOKESIA STOMACHS STOMACKS STOMATES STOPGAPS STORAGES STORAXES STOWAGES STRATOSE STRATOUS SUASIONS SUBATOMS SUBCOSTA SUBGOALS SUBSOLAR SUPPOSAL SURCOATS SWAGSHOP SWALLOWS SWANSONG SYMPOSIA SYNAGOGS SYNANONS SYNODALS SYNOVIAS TEASHOPS TOADLESS TOASTERS TOASTIES TOPMASTS TOPSAILS TORSADES TOSHACHS TOSTADAS TOSTADOS TOWSACKS TRANSOMS TREASONS TSARDOMS TWASOMES UNSEASON VAMOOSES VAVASORS VAVASSOR VODCASTS VOLUSPAS VOTARESS WARISONS WASHOUTS WASHPOTS WAVESONS WAYPOSTS WOODSIAS ZAMOUSES ZYMOSANS