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