There are 456 fifteen-letter words containing 2A, I, M and S, https://www.bestwordlist.com/c/a/5/15letterwordswithaaims.htm ABSTRACTIONISMS ACCLIMATISATION ACHROMATICITIES ACHROMATISATION ADENOCARCINOMAS ADIATHERMANCIES ADMINISTRATIONS ADMIRABLENESSES ADRENALECTOMIES AERODYNAMICISTS AFFRANCHISEMENT AGGRANDISEMENTS AGGRANDIZEMENTS AGRIBUSINESSMAN ALEXIPHARMAKONS ALUMINOSILICATE AMARYLLIDACEOUS AMBASSADORSHIPS AMBISEXUALITIES AMINOPEPTIDASES AMINOPHENAZONES AMMONIFICATIONS AMYLOBARBITONES ANAGRAMMATISING ANCYLOSTOMIASES ANCYLOSTOMIASIS ANKYLOSTOMIASES ANKYLOSTOMIASIS ANNIHILATIONISM ANOMALISTICALLY ANTHROPOPATHISM ANTIALCOHOLISMS ANTIARRHYTHMICS ANTICAPITALISMS ANTICLERICALISM ANTICOLONIALISM ANTIHISTAMINICS ANTILIBERALISMS ANTIMATERIALISM ANTIMATERIALIST ANTIMETABOLITES ANTIMILITARISMS ANTIMILITARISTS ANTIMONARCHISTS ANTIQUARIANISMS ANTIRADICALISMS ANTIRATIONALISM ANTIROMANTICISM ANTISENTIMENTAL APOCALYPTICISMS APOPHTHEGMATISE APOPHTHEGMATIST APOTHEGMATISING ARCHAEOMETRISTS ARCHEOMAGNETISM AROMATHERAPISTS ASSIMILATIONISM ASSIMILATIONIST ASSOCIATIONISMS ASTRODYNAMICIST ATMOSPHERICALLY AUDIOMETRICIANS AUTODIDACTICISM AUTOMATISATIONS AUTOMATIZATIONS AXIOMATISATIONS AXIOMATIZATIONS BACCHANALIANISM BIDIALECTALISMS BRACHYCEPHALISM BRACHYDACTYLISM BREATHARIANISMS CARAMELISATIONS CARAMELIZATIONS CARCINOSARCOMAS CASTANOSPERMINE CASTRAMETATIONS CATACLYSMICALLY CENTENARIANISMS CHAMBERLAINSHIP CHRESTOMATHICAL CIRCUMAMBAGIOUS CIRCUMAMBULATES CIRCUMNAVIGATES CIRCUMSTANTIALS CIRCUMSTANTIATE CLIMATOGRAPHIES COCHAIRMANSHIPS COMMANDANTSHIPS COMMUNALISATION COMPARABILITIES COMPARATIVENESS COMPASSIONATELY COMPASSIONATING CRIMINALISATION CYANOCOBALAMINS CYTOPLASMICALLY DACTYLIOMANCIES DAMAGEABILITIES DECIMALISATIONS DECIMALIZATIONS DECONTAMINATORS DEGLAMORISATION DEHUMANISATIONS DEHUMANIZATIONS DEMAGNETISATION DEMATERIALISING DEMOCRATISATION DEMONSTRATIONAL DEMORALISATIONS DEMORALIZATIONS DEMUTUALISATION DEPARTMENTALISE DEPARTMENTALISM DERMATOGRAPHIAS DERMATOGRAPHIES DERMATOPLASTIES DEUTERANOMALIES DEXAMPHETAMINES DIAPHRAGMATITIS DIAPHRAGMITISES DISACCOMMODATED DISACCOMMODATES DISAFFIRMATIONS DISAMBIGUATIONS DISARRANGEMENTS DISASSIMILATING DISASSIMILATION DISASSIMILATIVE DISEMBARKATIONS DISEMBARRASSING DOCTRINARIANISM DRAUGHTSMANSHIP ECHOCARDIOGRAMS EGALITARIANISMS ELEUTHEROMANIAS EMANCIPATIONIST ENCOMIASTICALLY ENDOPARASITISMS EPIGRAMMATISERS EPIGRAMMATISING EPIGRAMMATIZERS EPISCOPALIANISM EQUALITARIANISM ESEMPLASTICALLY EUDAEMONISTICAL EVANGELICALISMS EXAMINABILITIES FAMILIARISATION FLAGELLOMANIACS FLAVOURDYNAMICS FLEXITARIANISMS FORISFAMILIATED FORISFAMILIATES FORMALISTICALLY FORMULARISATION FRAGMENTARINESS FUNDAMENTALISMS FUNDAMENTALISTS FUTILITARIANISM GALVANOTROPISMS GASTRONOMICALLY GRAMMATICALNESS GRAMMATICASTERS GRAMMATOLOGISTS HAEMAGGLUTININS HAMAMELIDACEOUS HARMONISTICALLY HEADMASTERLIEST HEADMASTERSHIPS HEMAGGLUTINATES HEREDITARIANISM HEXOSAMINIDASES HIEROGRAMMATIST HOMOPLASTICALLY HUMANITARIANISM HUMANITARIANIST HYPERADRENALISM HYPERCALCAEMIAS HYPERCATABOLISM HYPERGLYCAEMIAS HYPERNATRAEMIAS HYPERPARASITISM HYPERURICAEMIAS HYPOMAGNESAEMIA HYPOMAGNESEMIAS IDIOMATICALNESS IMAGINARINESSES IMAGINATIVENESS IMMATERIALISING IMMATERIALITIES IMMEASURABILITY IMMORTALISATION IMMUNOASSAYABLE IMMUNOASSAYISTS IMPALPABILITIES IMPARTIALNESSES IMPASSABILITIES IMPLACABILITIES IMPRACTICALNESS IMPROVISATIONAL IMPROVISATORIAL INANIMATENESSES INFLAMMABLENESS INFORMATISATION INTERANIMATIONS INTERPAROXYSMAL INTRAMUSCULARLY ISMATICALNESSES LAMELLIROSTRATE LEUCOCYTHAEMIAS LIBERTARIANISMS LIPOGRAMMATISMS LIPOGRAMMATISTS LYMPHANGIOGRAMS MACADAMISATIONS MACADAMIZATIONS MACHINABILITIES MACRENCEPHALIAS MACRENCEPHALIES MACROCOSMICALLY MACROMARKETINGS MACROSCOPICALLY MACROSPORANGIUM MAGISTERIALNESS MAGISTRATESHIPS MAGISTRATICALLY MAGNANIMOUSNESS MAJORITARIANISM MALADMINISTERED MALADROITNESSES MALAPPROPRIATES MALASSIMILATION MALPRESENTATION MANAGEABILITIES MANIFESTATIONAL MANNERISTICALLY MARGARITIFEROUS MARGINALISATION MARKETABILITIES MARSHMALLOWIEST MARTENSITICALLY MASCULINISATION MASCULINIZATION MASOCHISTICALLY MASSOTHERAPISTS MATERFAMILIASES MATERIALISATION MATERIALISTICAL MATHEMATICISING MATHEMATISATION MATRIARCHALISMS MATRIFOCALITIES MATRILOCALITIES MEASURABILITIES MECHANISTICALLY MEDICALISATIONS MEDICALIZATIONS MEGALOCEPHALIES MELODRAMATISING MEMORIALISATION MENTALISTICALLY MEROBLASTICALLY MESATICEPHALIES MESATICEPHALOUS METACHROMATISMS METAGRABOLISING METALLOGRAPHIES METALLOGRAPHIST METAMATHEMATICS METAMICTISATION METASTABILITIES MICROBAROGRAPHS MILITARISATIONS MILITARIZATIONS MILLENARIANISMS MINERALISATIONS MINERALIZATIONS MINIATURISATION MINICALCULATORS MISACCEPTATIONS MISAPPLICATIONS MISAPPRECIATING MISAPPRECIATION MISAPPRECIATIVE MISAPPROPRIATED MISAPPROPRIATES MISARRANGEMENTS MISARTICULATING MISARTICULATION MISCALCULATIONS MISCEGENATIONAL MISCELLANARIANS MISCHARACTERISE MISCHARACTERIZE MISTRANSLATIONS MISVOCALISATION MISVOCALIZATION MONOSACCHARIDES MORPHINOMANIACS MULTICANDIDATES MULTICHARACTERS MULTILATERALISM MULTILATERALIST MULTIPARAMETERS MULTIRACIALISMS MUSICALISATIONS MUSICALIZATIONS MYOCARDIOGRAPHS NECESSARIANISMS NEOARSPHENAMINE NEUROANATOMISTS NOCTAMBULATIONS NOMINALISATIONS NOMINALIZATIONS NONASTRONOMICAL NONCHARISMATICS NONINFLAMMABLES NORMOGLYCAEMIAS NOTHINGARIANISM NUCLEOPLASMATIC OLIGOCYTHAEMIAS OPERATIONALISMS OPTIMALISATIONS OPTIMALIZATIONS ORGANOMETALLICS OVERDRAMATISING PALAEOMAGNETISM PALAEOMAGNETIST PALEOMAGNETISMS PALEOMAGNETISTS PANOPHTHALMITIS PANTOPRAGMATICS PARAGRAMMATISTS PARAJOURNALISMS PARAMETRISATION PARAMYXOVIRUSES PARANORMALITIES PARASYMPATHETIC PARLIAMENTARISM PATERFAMILIASES PATRIARCHALISMS PENTADACTYLISMS PHANTASMAGORIAL PHANTASMAGORIAS PHANTASMAGORIES PHANTASMALITIES PHARMACEUTICALS PHARMACOGNOSIES PHARMACOGNOSIST PHARMACOGNOSTIC PHARMACOLOGISTS PHARMACOPOEIANS PHARMACOPOEISTS PHARMACOPOLISTS PLAGIOSTOMATOUS PLAINCLOTHESMAN PLASMOLYTICALLY PLUMBAGINACEOUS POLYACRYLAMIDES POSTMILLENARIAN PRAGMATICALNESS PRAGMATISATIONS PRAGMATIZATIONS PREMILLENARIANS PROLETARIANISMS REACCLIMATISING REACTIONARYISMS REAPPRAISEMENTS REHUMANIZATIONS REIMPLANTATIONS REMARKABILITIES REMATERIALISING REMORALISATIONS REMORALIZATIONS RENORMALISATION RETINOBLASTOMAS RHINOSCLEROMATA ROMANTICALITIES ROMANTICISATION SABERMETRICALLY SABERMETRICIANS SACCHARIMETRIES SACCHAROMETRIES SACRAMENTALISMS SACRAMENTALISTS SACRAMENTARIANS SADOMASOCHISTIC SCAPHOCEPHALISM SCHEMATISATIONS SCHEMATIZATIONS SEISMOGRAPHICAL SEMIABSTRACTION SEMIMANUFACTURE SEMIPARASITISMS SEMITRANSPARENT SENSATIONALISMS SERVOMECHANICAL SLUMPFLATIONARY SOMATOLOGICALLY SOMNAMBULATIONS SPERMATOBLASTIC SPIROCHAETAEMIA STALAGMITICALLY STALAGMOMETRIES STIGMATISATIONS STIGMATIZATIONS STIGMATOPHILIAS STOMATOPLASTIES SUBLAPSARIANISM SUBSTANTIALISMS SULFAMETHAZINES SULPHACETAMIDES SULPHANILAMIDES SUPERNATURALISM SUPERPARASITISM SYMPATHETICALLY SYMPTOMATICALLY SYNAPOSEMATISMS SYSTEMATISATION SYSTEMATIZATION TATTERDEMALIONS TETRASPORANGIUM THAUMATOLATRIES THERMAESTHESIAS THERMALISATIONS THERMALIZATIONS TOTALITARIANISM TRADITIONALISMS TRANSAMINATIONS TRANSFORMATIONS TRANSILLUMINATE TRANSMIGRATIONS TRANSMITTANCIES TRANSMUTABILITY TRANSMUTATIONAL TRANSSEXUALISMS TRAUMATISATIONS TRAUMATIZATIONS TRAUMATONASTIES TRIHALOMETHANES TRYPANOSOMIASES TRYPANOSOMIASIS UBIQUITARIANISM ULTRALIBERALISM ULTRAMONTANISMS ULTRAMONTANISTS UNAMIABLENESSES UNCOMPASSIONATE UNCOMPLAISANTLY UNFAMILIARITIES UNIFORMITARIANS UNSECTARIANISMS UNSTATESMANLIKE UNTRANSMIGRATED UTILITARIANISMS