There are 1140 nine-letter words containing A, C, E, I and S, https://www.bestwordlist.com/c/a/5/9letterwordswithaceis.htm ABBOTCIES ABDICATES ABIDANCES ABSCINDED ABSCISSAE ABSCISSES ACADEMIAS ACADEMICS ACADEMIES ACADEMISM ACADEMIST ACARIASES ACCENSION ACCESSING ACCESSION ACCIDENTS ACCREDITS ACCROIDES ACENTRICS ACETAMIDS ACETIFIES ACHENIUMS ACHIEVERS ACHILLEAS ACHIMENES ACIDEMIAS ACIDHEADS ACIDIFIES ACIDITIES ACIERAGES ACIERATES ACOUCHIES ACQUIESCE ACQUIREES ACQUIRERS ACRIDINES ACRIDNESS ACROLEINS ACROSPIRE ACTINIDES ACTIONERS ACTIVATES ACTIVISED ACTIVISES ACTIVIZES ACTUALISE ACTUARIES AEDICULES AESCULINS AESTHETIC AFFIANCES AGACERIES AGELASTIC AIRCHECKS AIRSCAPES AIRSCREWS AIRSPACES ALBICORES ALCHEMIES ALCHEMISE ALCHEMIST ALCHYMIES ALGICIDES ALLERGICS ALLIANCES ALLSPICES ALOPECIAS AMBIANCES AMBIENCES AMNESIACS ANACLISES ANALCIMES ANALCITES ANALGESIC ANAPESTIC ANARCHIES ANARCHISE ANCHOVIES ANDESITIC ANECDYSIS ANELASTIC ANGELICAS ANGLICISE ANIMACIES ANORETICS ANOREXICS ANTICISED ANTICISES ANTICIZES APHICIDES APIACEOUS APNEUSTIC APRICATES ARABICISE ARACHISES ARCCOSINE ARCHAISED ARCHAISER ARCHAISES ARCHAIZES ARCHERIES ARDENCIES ARMISTICE ARSENICAL ARTIFICES ARUSPICES ARVICOLES ASCARIDES ASCARISES ASCENDING ASCENSION ASCENSIVE ASCERTAIN ASCETICAL ASCIDIATE ASCLEPIAD ASCLEPIAS ASEMANTIC ASPECTING ASPHERICS ASSOCIATE ASTHENICS ASTRICTED ASYNDETIC ATCHIEVES ATECHNICS ATHEISTIC ATHETOSIC ATHLETICS ATTICISED ATTICISES ATTICIZES AUDIENCES AURISCOPE AUSPICATE AUTECIOUS AUTECISMS AUTOECISM BACKBITES BACKFILES BACKFIRES BACKLINES BACKSIDES BACKSLIDE BACKSPEIR BACTERIAS BACTERINS BACTERISE BACULITES BALCONIES BARBICELS BARRICOES BASCINETS BASILECTS BASILICAE BEACHIEST BEACHSIDE BEDCHAIRS BETACISMS BIACETYLS BINNACLES BIRDCAGES BISULCATE BITTACLES BLASTEMIC BONIFACES BORACITES BRACIOLES BRAINCASE BRATTICES BRIEFCASE BRISANCES BUSTICATE CABRIOLES CACHEXIAS CACHEXIES CACOEPIES CADENCIES CADETSHIP CAESARIAN CAESARISM CAFFEINES CAFFEISMS CAGELINGS CAIRNIEST CALAMINES CALAMITES CALCIFIES CALIFATES CALLAIDES CALLIOPES CALLIPEES CALLIPERS CALLTIMES CALORISED CALORISES CALORIZES CALUMNIES CALVARIES CALVITIES CAMELINES CAMELLIAS CAMELOIDS CAMELRIES CAMISADES CAMISOLES CAMOMILES CAMPERIES CAMPESINO CAMPFIRES CAMPHINES CAMPHIRES CAMPINESS CAMPSITES CANAIGRES CANAILLES CANALISED CANALISES CANALIZES CANDIDEST CANFIELDS CANISTELS CANISTERS CANNERIES CANNINESS CANNISTER CANOEINGS CANOEISTS CANONISED CANONISER CANONISES CANONIZES CANONRIES CANTICLES CANTINESS CANTONISE CAPELINES CAPESKINS CAPITATES CAPOEIRAS CAPONIERS CAPONISED CAPONISES CAPONIZES CAPRIFIES CAPRIOLES CAPSULISE CAPSULIZE CARABINES CARBOLISE CARBONISE CARBURISE CAREERISM CAREERIST CARELINES CARESSING CARESSIVE CARITASES CARITATES CARNALISE CARNIFIES CARRIAGES CARRIOLES CARSPIELS CARTELISE CARTELISM CARTELIST CARVERIES CASEATING CASEATION CASEFYING CASEINATE CASEMIXES CASHIERED CASHIERER CASHSPIEL CASIMERES CASIMIRES CASKETING CASSIMERE CASSINGLE CASSIOPES CASTEISMS CASTIGATE CASTORIES CASUALISE CASUALIZE CATALEXIS CATAMITES CATBRIERS CATCHIEST CATECHINS CATECHISE CATECHISM CATECHIST CATENOIDS CATERINGS CATFISHED CATFISHES CATHARISE CATHEPSIN CATTERIES CATTINESS CAUDICLES CAULICLES CAUSATIVE CAUSERIES CAUTERIES CAUTERISE CAUTERISM CAVALIERS CAVALLIES CAVALRIES CAVENDISH CAVIARIES CAVILLERS CAVITATES CEASEFIRE CECROPIAS CEDARIEST CELERIACS CELESTIAL CELIBATES CELLARIST CEMBALIST CEMITARES CENSORIAL CENSORIAN CENTIARES CEPHALICS CEPHALINS CERAMIDES CERAMISTS CERASTIUM CERATITIS CERCARIAS CEREALIST CESARIANS CESSATION CHAFFIEST CHAINLESS CHAINLETS CHALKIEST CHALLISES CHAMOISED CHAMOISES CHAMPIEST CHANCIEST CHANTRIES CHAPATIES CHAPITERS CHAPPIEST CHARIDEES CHARINESS CHARITIES CHARRIEST CHASMIEST CHASSEING CHASTISED CHASTISER CHASTISES CHATLINES CHATTIEST CHAVVIEST CHEATINGS CHELASHIP CHEMICALS CHICANERS CHICKPEAS CHIGETAIS CHILLAXES CHIMAERAS CHIMENEAS CHIMINEAS CHIVAREES CHIVARIES CHOLEMIAS CICATRISE CIDARISES CINEASTES CIPAILLES CISALPINE CISPADANE CISTERNAE CISTERNAL CISTVAENS CITRANGES CITYSCAPE CLAGGIEST CLAMMIEST CLANKIEST CLARIFIES CLARINETS CLARITIES CLARTIEST CLASSIBLE CLASSIEST CLAVECINS CLAVICLES CLAVIGERS CLEANINGS CLEANSING CLEANSKIN CLEARINGS CLEARSKIN CLEAVINGS CLERICALS CLIMATISE CLINAMENS CLINOAXES CLIPSHEAR COACHIEST COADMIRES COALIFIES COALMINES COASTLINE COASTWISE COCAINISE COCINERAS COGITATES COINMATES COMEDIANS COMPANIES COPASETIC COPREMIAS CORAMINES CORRASIVE COSEISMAL COUSINAGE COXALGIES COXSACKIE CRABBIEST CRACKIEST CRAFTIEST CRAGGIEST CRAMESIES CRAMOISIE CRAMPIEST CRANIATES CRANKIEST CRAPPIEST CRAWLIEST CRAZINESS CREAKIEST CREAMIEST CREASIEST CREATINES CREATIONS CREATIVES CREOLIANS CRIBBAGES CRISPATED CRISPHEAD CRISTATED CROAKIEST CRUCIATES CRUISEWAY CRYBABIES CUIRASSED CUIRASSES CURARINES CURARISED CURARISES CURARIZES CURATIVES CUSPIDATE CYSTIDEAN DACOITIES DACQUOISE DECASTICH DECEASING DECIGRAMS DECIMATES DECLINALS DEDICANTS DEDICATES DEFIANCES DEISTICAL DELICATES DEMONIACS DERACINES DESCALING DESICCANT DESICCATE DEVIANCES DIABETICS DIACETYLS DIACTINES DIARCHIES DIASCOPES DICASTERY DICENTRAS DICKHEADS DINOCERAS DIOCESANS DISAFFECT DISCALCED DISCANDIE DISCANTED DISCANTER DISCARDED DISCARDER DISCHARGE DISGRACED DISGRACER DISGRACES DISLOCATE DISPEACES DISPLACED DISPLACER DISPLACES DISTANCED DISTANCES DUARCHIES DULCINEAS DYARCHIES EARPIECES ECCLESIAE ECCLESIAL ECDYSIAST ECHIURANS ECLAMPSIA ECOSSAISE ECOTOPIAS ECPHRASIS ECSTASIED ECSTASIES ECSTASISE ECSTASIZE ECSTATICS EDACITIES EKISTICAL EMACIATES EMPAESTIC EMPHATICS EMPLASTIC ENACTIONS ENCAENIAS ENCANTHIS ENCASHING ENCAUSTIC ENCHASING ENCOMIAST ENCRATIES EPACRISES EPARCHIES EPINASTIC EPISCOPAL EPISTATIC ERISTICAL ERRANCIES ESCALIERS ESCAPISMS ESCAPISTS ESCARPING ESCRIBANO ESOTERICA ESTANCIAS ETHICIANS EUPLASTIC EUSTACIES EXACTIONS EXARCHIES EXARCHIST EXCISABLE EXCISEMAN EXCITANTS EXITANCES EXPISCATE EXSICCANT EXSICCATE FACELIFTS FACEMAILS FACETIMES FACETINGS FACETIOUS FACSIMILE FACTORIES FACTORISE FACULTIES FALLACIES FANCIFIES FANCILESS FANCINESS FARCIFIES FASCIATED FASCICLED FASCICLES FASCICULE FASCINATE FASCIOLES FATISCENT FERACIOUS FILACEOUS FILECARDS FIREBACKS FIRECLAYS FIRESCAPE FISHCAKES FOCALISED FOCALISES FOCALIZES FRANCHISE FRANCISED FRANCISES FRANCIZES FRICADELS FRICASSEE GAELICISE GAELICISM GALLICISE GEARSTICK GEOMATICS GEOSTATIC GIVEBACKS GLACIATES GLYCEMIAS GLYCERIAS GRAECISED GRAECISES GRAECIZES GRIMACERS GUIDANCES HACIENDAS HACKERIES HACKLIEST HAEMATICS HALICORES HANSEATIC HEADSTICK HEARTSICK HELICASES HELITACKS HELLICATS HEMISPACE HEPATICAS HESITANCE HESITANCY HEXASTICH HICCATEES HIERARCHS HIERATICS HIJACKERS HUISACHES ICEKHANAS ICEMAKERS ICESCAPES IDOCRASES ILIACUSES IMPACTERS IMPEACHES INCESSANT INCHOATES INCHTAPES INCLASPED INCREASED INCREASER INCREASES INCUBATES INDICATES INELASTIC INFANCIES INFUSCATE INSECTARY INSECTEAN INSTANCED INSTANCES INSURANCE INTERACTS INTESTACY INVOCATES IRASCIBLE ISCHAEMIA ISCHAEMIC ISCHEMIAS ISOOCTANE ISSUANCES ITALICISE ITERANCES JACINTHES JACKSNIPE JAUNDICES JERRICANS JOUISANCE JUDICARES KAMACITES KEPHALICS KERATOSIC KNACKIEST KOLACKIES KOPASETIC LACERTIDS LACEWINGS LAICITIES LAITANCES LARCENIES LARCENIST LASERDISC LATENCIES LEACHIEST LEACHINGS LECHAYIMS LEMNISCAL LEUCEMIAS LICHGATES LICHWAKES LIFECARES LIFEHACKS LIMACEOUS LIMESCALE LOCALISED LOCALISER LOCALISES LOCALITES LOCALIZES LOCATIVES LONICERAS LORICATES LYCAENIDS MACARISED MACARISES MACARIZES MAGNETICS MAIEUTICS MALEDICTS MALEFICES MANCIPLES MANICURES MARCASITE MASCULINE MASTICATE MASTICHES MAVERICKS MECHANICS MECHANISE MECHANISM MECHANIST MECHITZAS MEDIACIES MEDICAIDS MEDICANTS MEDICARES MEDICATES MELODICAS MENISCATE MERICARPS MESCALINE MESCALINS MESCALISM MESICALLY MESSIANIC METALLICS MICACEOUS MICAWBERS MIDCALVES MIDSPACES MILLCAKES MILLRACES MILLSCALE MINDSCAPE MISADVICE MISBECAME MISCALLED MISCALLER MISCHANCE MISCHARGE MISCREANT MISCREATE MISLOCATE MISPLACED MISPLACES MISSPACED MISSPACES MISTRACED MISTRACES MOSAICKED MUCILAGES MUSCADINE MUSCARINE MUSICALES NAISSANCE NARCEINES NARCOTISE NAVICERTS NECTARIES NICKNAMES NUISANCER NUISANCES OBEISANCE OBELISCAL OCEANIDES OCEANSIDE OPACIFIES OPACITIES OPERATICS ORATRICES OSCILLATE OSCITANCE OSCITATED OSCITATES OSTRACISE OSTRACIZE PACIFIERS PACKETISE PANDEMICS PANNICLES PARCHEESI PARCHESIS PARECIOUS PARECISMS PAROECISM PARTICLES PASTICHES PATCHIEST PATENCIES PATHETICS PATIENCES PATRICOES PAUCITIES PEACENIKS PEACHICKS PEACHIEST PECCARIES PECTINALS PECULIARS PEIRASTIC PEMMICANS PERICARPS PERICLASE PERISARCS PERISCIAN PHACELIAS PICADORES PICAYUNES PICOWAVES PINACEOUS PINNACLES PIPECLAYS PIQUANCES PISCARIES PISTACHES PITTANCES PLACIDEST PLIANCIES POACHIEST POETICALS PRACTICES PRACTISED PRACTISER PRACTISES PRAECIPES PRAISEACH PRECISIAN PRELACIES PREMOSAIC PRIMACIES PRIVACIES PROCAINES PROSCENIA PUISSANCE PUMICATES QUACKIEST RACEMISED RACEMISES RACEMISMS RACEMIZES RACIALISE RADIANCES RADICATES RADICULES RANCIDEST RASCAILLE RATICIDES RAUCITIES REACTIONS READDICTS REALISTIC RECAMIERS RECARRIES RECASTING RECEIVALS RELIANCES REPLICASE RESCALING RESIANCES RESPACING RETRAICTS RHACHIDES RHACHISES RHEOBASIC RHOTACISE RICEGRASS RICERCARS RIDDANCES ROCAILLES ROCKABIES RUSTICATE SACRALISE SACRALIZE SACRIFICE SACRIFIDE SACRIFIED SACRIFIES SACRILEGE SAGENITIC SALIAUNCE SALICETUM SALICINES SALIENCES SALURETIC SAPIENCES SAPRAEMIC SATISFICE SAUCINESS SAUCISSES SCABBIEST SCABIETIC SCAFFIEST SCALELIKE SCALETAIL SCALINESS SCANTIEST SCAPOLITE SCARABAEI SCAREDIES SCARFWISE SCARIFIED SCARIFIER SCARIFIES SCARINESS SCARPETTI SCARPINES SCARRIEST SCATTIEST SCAWTITES SCENARIES SCENARIOS SCENARISE SCENARIST SCENARIZE SCEPTICAL SCHECHITA SCHEMATIC SCHIAVONE SCHIEDAMS SCIAENIDS SCIAENOID SCIENTIAL SCIMETARS SCLEROTIA SCRAGGIER SCRAICHED SCRAIGHED SCRANNIER SCRAPPIER SCRATCHIE SCRAWLIER SCRAWNIER SCREAKIER SCREAKING SCREAMING SCRIBABLE SCRIMMAGE SCRIPPAGE SEAPIECES SEARCHING SEASICKER SECTARIAL SECTARIAN SECTARIES SECTIONAL SECTORIAL SECURITAN SEISMICAL SELACHIAN SELICTARS SEMANTICS SEMICOMAS SEMIVOCAL SEMUNCIAE SEMUNCIAL SEMUNCIAS SENNACHIE SEQUACITY SEXAHOLIC SHACKIEST SHANACHIE SHECHITAH SHECHITAS SHITFACED SHITFACES SIBILANCE SICCATIVE SICILIANE SICKLEMAN SICKLEMIA SIDALCEAS SIDECHAIR SIDETRACK SILICATED SILICATES SILICULAE SIMULACRE SKEPTICAL SKIASCOPE SKINCARES SLICEABLE SLIPCASED SLIPCASES SLUICEWAY SMIERCASE SNACKIEST SNATCHIER SOCIABLES SOCIALISE SOCIALITE SOCIALIZE SOCIATIVE SONANCIES SONICATED SONICATES SPACESHIP SPACESUIT SPACETIME SPACINESS SPANAEMIC SPARTICLE SPECIALER SPECIALLY SPECIALTY SPECIATED SPECIATES SPELLICAN SPERMATIC SPHERICAL SPICULATE SPINACENE SPINACHES SPIRACLES STAIRCASE STARCHIER STEATITIC STEMMATIC STENOPAIC STERCULIA STICKABLE STRATEGIC SUCCINATE SUITCASES SULCALISE SULCALIZE SURICATES SUSCITATE SYCAMINES SYNDICATE SYNECHIAS TACHISMES TACHISTES TACITNESS TACKIFIES TACKINESS TACONITES TAGMEMICS TAILRACES TALCKIEST TEACHINGS TENACIOUS TENANCIES TEOCALLIS TESTACIES TETRACIDS THEATRICS THEMATICS THERIACAS THRIDACES TICKLACES TICKLEASS TIECLASPS TIMECARDS TIMESCALE TOISEACHS TRACERIES TRACHEIDS TRACKSIDE TRANCIEST TRIFECTAS TRUANCIES TSAREVICH TUNICATES UNACTIVES UNCEASING UNSCARIER URTICATES VACANCIES VACCINEES VACHERINS VACUITIES VALENCIAS VALENCIES VALIANCES VARIANCES VARICOSED VARICOSES VARISCITE VATICIDES VERACIOUS VERONICAS VERTICALS VESICANTS VESICATED VESICATES VESICULAE VESICULAR VIBRANCES VICARAGES VICARATES VICESIMAL VICINAGES VIDEOCAMS VILIACOES VINACEOUS VISCERATE VITACEOUS VITASCOPE VOCALISED VOCALISER VOCALISES VOCALIZES VOCATIVES VOIDANCES VOLCANISE VRAICKERS VULCANISE WACKINESS WHACKIEST WHITECAPS WISEACRES WISECRACK XERISCAPE ZWIEBACKS