There are 639 ten-letter words containing A, C, I, M and S, https://www.bestwordlist.com/c/a/5/10letterwordswithacims.htm
ACADEMISMS ACADEMISTS ACCLAIMERS ACCLIMATES ACCOMPLISH ACETAMIDES
ACHAENIUMS ACRIMONIES ACROBATISM ACTOMYOSIN ACUMINATES ADAMANCIES
ADMINICLES ADMIRANCES AGRONOMICS ALCHEMISED ALCHEMISES ALCHEMISTS
ALCHEMIZES ALCOHOLISM ALGORISMIC AMBISONICS AMERICIUMS AMPACITIES
AMPHISCIAN AMSINCKIAS ANACHORISM ANAMNESTIC ANARCHISMS ANGLICISMS
ANICONISMS ANISOMERIC ANTICIVISM ANTIMUSICS ANTIMYCINS ANTIRACISM
APOSEMATIC ARCHAICISM ARCHIMAGES ARCHIPLASM ARCMINUTES ARMISTICES
ARSMETRICK ASCETICISM ASCOGONIUM ASEPTICISM ASTATICISM ASTHMATICS
ASTIGMATIC ASTRONOMIC ASYMMETRIC ASYMPTOTIC ATACAMITES AUTOCRIMES
AUTOECISMS AUTOMATICS AUTONOMICS AXIOMATICS AXOPLASMIC BERDACHISM
BIOPLASMIC BLACKMAILS BLACKSMITH CABBALISMS CABINMATES CACHAEMIAS
CACIQUISMS CACOMISTLE CACOMIXLES CACONYMIES CACUMINALS CACUMINOUS
CADDISWORM CAESARISMS CAFFEINISM CAIRNGORMS CALAMARIES CALAMITIES
CALAMITOUS CALCIMINES CALIMOCHOS CALLIGRAMS CALMATIVES CALUMNIOUS
CALVARIUMS CAMARILLAS CAMBERINGS CAMELHAIRS CAMIKNICKS CAMISADOES
CAMORRISTA CAMORRISTI CAMORRISTS CAMPANILES CAMPANISTS CAMPESINOS
CAMPODEIDS CAMPSHIRTS CAMSTEERIE CAPITALISM CARAMELISE CARBAMIDES
CARBONIUMS CARCINOMAS CARDAMINES CAREERISMS CARMELITES CARNALISMS
CARTELISMS CASSIMERES CASUALISMS CATABOLISM CATECHISMS CAUTERISMS
CEMBALISTS CENTESIMAL CENTIGRAMS CENTRALISM CERAMICIST CERASTIUMS
CETUXIMABS CHAMFRAINS CHAMOISING CHAMOMILES CHAMPAIGNS CHARISMATA
CHAUVINISM CHEMOTAXIS CHEMTRAILS CHERIMOYAS CHIASMATIC CHILDERMAS
CHIMAERISM CHIPMAKERS CHIRIMOYAS CHIYOGAMIS CHLAMYDIAS CHLORALISM
CHOLAEMIAS CHORIAMBUS CHREMATIST CHROMATICS CHROMATIDS CHROMATINS
CHROMATIST CHURNALISM CINEMATISE CISMONTANE CLAMANCIES CLAMMINESS
CLASSICISM CLEMATISES CLIMATISED CLIMATISES CLIMATIZES CLIMATURES
CLIMAXLESS CLISTOGAMY COALMINERS COASSUMING COBALAMINS COCAINISMS
COLLIMATES COMATULIDS COMITADJIS COMMINATES COMMISSARS COMMISSARY
COMMITTALS COMPANIONS COMPARISON COMPASSING COMPASSION COMPLAINTS
COMPRISALS CONACREISM CONCLAVISM CONSIMILAR COPRAEMIAS COSEISMALS
COSMETICAL COSMICALLY COSMORAMIC COSTMARIES CRAMOISIES CREAMERIES
CREAMINESS CREMATIONS CRIMEWAVES CRIMINATES CROCOSMIAS CROSSCLAIM
CROTALISMS CULMINATES CURIALISMS CYANAMIDES CYMBALISTS CYSTEAMINE
DECIMALISE DECIMALISM DECIMALIST DECIMATORS DECLAIMERS DIACHYLUMS
DIACODIUMS DIACTINISM DICHROMATS DICUMAROLS DIDRACHMAS DISCLAIMED
DISCLAIMER DOCIMASIES DOCIMASTIC DOMESTICAL DOMINANCES DORMANCIES
DRACONISMS DYNAMICIST DYNAMISTIC DYSTHYMIAC ECLAMPSIAS ECLAMPSIES
EGOMANIACS EMANCIPIST EMICATIONS EMITTANCES EMPIRICALS EMPLASTICS
ENCOMIASTS EPISEMATIC ERRATICISM EXCAMBIONS EXCAMBIUMS EXCLAIMERS
FACSIMILED FACSIMILES FACTUALISM FAMILISTIC FANATICISM FEMINACIES
FORMICATES GAELICISMS GALLICISMS GASCONISMS GASOMETRIC GEOMANCIES
GLYCAEMIAS GRAMERCIES GRAPHEMICS GYMNASTICS HACKNEYISM HACKTIVISM
HARMONICAS HEMATINICS HEMISPACES HEMOCONIAS HEMOSTATIC HIERACIUMS
HISTAMINIC HOMOSOCIAL HUMANISTIC HYPOMANICS ICONOCLASM IMBALANCES
IMBRICATES IMITANCIES IMMANACLES IMMANENCES IMPACTIONS IMPACTITES
IMPEACHERS IMPEDANCES IMPLEACHES IMPLICATES IMPRECATES INCASEMENT
INCREMATES INSOMNIACS INTIMACIES ISCHAEMIAS ISOCHASMIC ISOCHEIMAL
ISOCHIMALS ISOCRYMALS ISODYNAMIC ISOGAMETIC JACKSMITHS KANAMYCINS
KINEMATICS LABDACISMS LACONICISM LACTIVISMS LAMBDACISM LAMBENCIES
LEMNISCATE LEUCAEMIAS LIMESCALES LUMBRICALS LUMINANCES LYMPHATICS
MACADAMIAS MACADAMISE MACARISING MACARONICS MACARONIES MACCARONIS
MACCHIATOS MACEDOINES MACHINATES MACHINIMAS MACHININGS MACHINISTS
MACKINTOSH MACROGLIAS MACROLIDES MACROPRISM MACROPSIAS MACTATIONS
MAFFICKERS MAGISTRACY MAGNIFICOS MAHLSTICKS MAINBRACES MAJESTICAL
MALACHITES MANCIPATES MANDIOCCAS MANICOTTIS MANICURIST MANSCAPING
MANTICORAS MANTICORES MANUSCRIPT MARASCHINO MARCASITES MARISCHALS
MARLACIOUS MASCARAING MASCULINES MASCULISTS MASHGICHIM MASOCHISMS
MASOCHISTS MASSACRING MASSETERIC MASTICABLE MASTICATED MASTICATES
MASTICATOR MASTODONIC MATACHINAS MATCHSTICK MATRIARCHS MATRICIDES
MATRICULAS MAULSTICKS MECHANISED MECHANISER MECHANISES MECHANISMS
MECHANISTS MECHANIZES MEDIASCAPE MEDICALISE MEDICASTER MEDICINALS
MEGACITIES MEGACURIES MEGASCOPIC MEGASPORIC MELANISTIC MELIACEOUS
MELISMATIC MELOXICAMS MENDACIOUS MENDICANTS MENOPAUSIC MEPACRINES
MERCURIALS MESCALINES MESCALISMS MESMERICAL MESOCRATIC METAETHICS
METAPHYSIC METASTATIC METRICATES METRICIANS MEZCALINES MICROBEADS
MICROBEAMS MICROCARDS MICROGLIAS MICROGRAMS MICROLOANS MICROPSIAS
MICROSCALE MICROSOMAL MICROSTATE MICROWATTS MICROWAVES MICTURATES
MIDWATCHES MILITANCES MILLOCRATS MILLSCALES MINACITIES MINCEMEATS
MINDSCAPES MINITRACKS MINUSCULAR MIRACULOUS MISADVICES MISBALANCE
MISCALLERS MISCALLING MISCANTHUS MISCAPTION MISCARRIED MISCARRIES
MISCASTING MISCATALOG MISCELLANY MISCHANCED MISCHANCES MISCHANNEL
MISCHANTER MISCHARGED MISCHARGES MISCHMETAL MISCLAIMED MISCLASSED
MISCLASSES MISCREANCE MISCREANCY MISCREANTS MISCREATED MISCREATES
MISCREATOR MISEDUCATE MISLOCATED MISLOCATES MISMATCHED MISMATCHES
MISOCAPNIC MISPACKAGE MISPATCHED MISPATCHES MISPLACING MISSPACING
MISTEACHES MISTRACING MOBCASTING MOCCASINED MODALISTIC MONACHISMS
MONACHISTS MONACTINES MONADISTIC MONARCHIES MONARCHISE MONARCHISM
MONARCHIST MONASTICAL MONISTICAL MONOCHASIA MONOPHASIC MORALISTIC
MORDACIOUS MORDANCIES MORTICIANS MOSAICALLY MOSAICISMS MOSAICISTS
MOSAICKING MOSAICLIKE MOUSTACHIO MULTICASTS MULTIPACKS MUNICIPALS
MUSCADINES MUSCARDINE MUSCARINES MUSCARINIC MUSCATORIA MUSICALISE
MUSICALITY MUSICALIZE MUSICIANER MUSICIANLY MUSTACHIOS MYASTHENIC
MYCORHIZAS MYDRIATICS MYOBLASTIC MYOMANCIES MYSTAGOGIC MYSTICALLY
NARCISSISM NARCOTISMS NAUMACHIAS NAUMACHIES NICKNAMERS NOMARCHIES
NONIMPACTS NONMUSICAL NONRACISMS NORMALCIES NOSOCOMIAL NUMERACIES
NUMISMATIC OMITTANCES OMPHACITES ONOMASTICS OPSOMANIAC ORGANICISM
ORGANISMIC OSTRACISMS OVERCLAIMS PACIFICISM PANCOSMISM PANSPERMIC
PARAMEDICS PAROECISMS PAROEMIACS PAROXYSMIC PEACETIMES PHALLICISM
PHANTASMIC PHARMACIES PHARMACIST PICTOGRAMS PIECEMEALS PIRACETAMS
PNEUMATICS POLYMASTIC PORISMATIC POSTATOMIC POSTIMPACT PRACTICUMS
PRAGMATICS PROSAICISM QUICKBEAMS QUITCLAIMS RACEMISING RACIALISMS
RADICALISM RAMPACIOUS RAMPANCIES RASCALISMS REACCLAIMS RECLAIMERS
REICHSMARK REVANCHISM RHEUMATICS RHOTACISMS RIFAMYCINS ROMANCINGS
SACHEMSHIP SACRARIUMS SALICETUMS SALICYLISM SALIMETRIC SANCTIMONY
SCAMBLINGS SCAMMONIES SCAMPERING SCAMPISHLY SCHEMATICS SCHEMATISE
SCHEMATISM SCHEMATIST SCHEMATIZE SCHISMATIC SCHLIMAZEL SCHMALZIER
SCHMEARING SCHOOLMAID SCINTIGRAM SCIOMANCER SCIOMANTIC SCRAMBLING
SCREAMINGS SCRIMMAGED SCRIMMAGER SCRIMMAGES SCRIMSHANK SCRIMSHAWS
SECULARISM SEMANTICAL SEMAPHORIC SEMISACRED SEPTICEMIA SERMONICAL
SERVICEMAN SHADCHANIM SICKLEMIAS SIMONIACAL SIMPLICIAL SIMULACRES
SIMULACRUM SIMULCASTS SINARCHISM SLACTIVISM SMIERCASES SMITHCRAFT
SOCIALISMS SOCIOGRAMS SPACETIMES SPECIALISM SPERMACETI SPERMATICS
SPIRACULUM STIGMATICS STIMULANCY STOMACHICS STOMACHIER STOMACHING
STOMATITIC STRABISMIC SUBATOMICS SYMBOLICAL SYMPLASTIC SYMPOSIACS
SYSTEMATIC TALISMANIC TASIMETRIC TELEMATICS TELESMATIC TETRASEMIC
TIMESCALES ULTIMACIES UMBILICALS VACCINIUMS VOICEMAILS VOLCANISMS
VULCANISMS ZOOMANCIES ZYGOMATICS