There are 437 fourteen-letter words containing 2A, 2I and M, https://www.bestwordlist.com/c/a/5/14letterwordswithaaiim.htm
ABORIGINALISMS ABSTRACTIONISM ACADEMICALISMS ACCIDENTALISMS ACCLIMATATIONS
ACCLIMATISABLE ACCLIMATIZABLE ACTINOMETRICAL ACTINOURANIUMS ADMINICULATING
ADMINISTRATING ADMINISTRATION ADMINISTRATIVE ADMINISTRATORS ADMINISTRATRIX
ADMIRABILITIES AERODYNAMICIST ALTIMETRICALLY AMINOACIDURIAS AMINOPEPTIDASE
AMMONIFICATION AMPHIARTHROSIS AMPHIBOLOGICAL AMPHICHROMATIC AMPLIFICATIONS
ANASTIGMATISMS ANATHEMATISING ANATHEMATIZING ANATOMISATIONS ANATOMIZATIONS
ANIMADVERSIONS ANIMALISATIONS ANIMALIZATIONS ANISOMETROPIAS ANNEXATIONISMS
ANONYMISATIONS ANONYMIZATIONS ANTIALCOHOLISM ANTIARRHYTHMIA ANTIARRHYTHMIC
ANTIASTHMATICS ANTICAPITALISM ANTICHLAMYDIAL ANTICOMMERCIAL ANTIDEFAMATION
ANTIDEMOCRATIC ANTIDROMICALLY ANTIFORMALISMS ANTIFORMALISTS ANTIHISTAMINES
ANTIHISTAMINIC ANTIHUMANISTIC ANTILIBERALISM ANTILOGARITHMS ANTIMECHANISTS
ANTIMETABOLITE ANTIMETASTATIC ANTIMETATHESIS ANTIMICROBIALS ANTIMILITARISM
ANTIMILITARIST ANTIMONARCHIST ANTINOMIANISMS ANTIQUARIANISM ANTIRADICALISM
ANTIRHEUMATICS ANTIRITUALISMS ANTISOCIALISMS ANTISPASMODICS APOCALYPTICISM
APPROXIMATIONS ARCHIMANDRITES ARISTOCRATISMS ARITHMETICALLY ARITHMETICIANS
ARITHMOPHOBIAS AROMATISATIONS AROMATIZATIONS ASSIMILABILITY ASSIMILATIVELY
ASSOCIATIONISM ASSUMABILITIES ASTIGMATICALLY ATTEMPTABILITY AUDIOMETRICIAN
AUTOMATICITIES AUTOMATISATION AUTOMATIZATION AXIOMATISATION AXIOMATIZATION
AXISYMMETRICAL BIBLIOMANIACAL BIDIALECTALISM BIODYNAMICALLY BIOMATHEMATICS
BIPARTISANISMS BREATHARIANISM CABINETMAKINGS CALORIMETRICAL CARAMELISATION
CARAMELIZATION CARCINOMATOSIS CARDIOMEGALIES CENTENARIANISM CIRCUMNAVIGATE
CIRCUMSTANTIAL CLIMATOLOGICAL COCHAIRMANSHIP COMMUNITARIANS COMPAGINATIONS
COMPARATIVISTS CONFIRMATIONAL CONTAMINATIONS CONTRARIANISMS CRANIOMETRICAL
DAMNIFICATIONS DEAMINISATIONS DEAMINIZATIONS DECIMALISATION DECIMALIZATION
DEFAMILIARIZED DEFAMILIARIZES DEHUMANISATION DEHUMANIZATION DEMATERIALISED
DEMATERIALISES DEMATERIALIZED DEMATERIALIZES DEMORALISATION DEMORALIZATION
DENOMINATIONAL DIAGRAMMATICAL DIAMANTIFEROUS DIATHERMANCIES DIATHERMANEITY
DIPLOMATICALLY DISAFFIRMANCES DISAFFIRMATION DISAMBIGUATING DISAMBIGUATION
DISASSIMILATED DISASSIMILATES DISEMBARKATION DITHIOCARBAMIC DOGMATISATIONS
DOGMATIZATIONS DRAMATISATIONS DRAMATIZATIONS EGALITARIANISM ENANTIODROMIAS
ENDOPARASITISM EPIGRAMMATICAL EPIGRAMMATISED EPIGRAMMATISER EPIGRAMMATISES
EPIGRAMMATISMS EPIGRAMMATISTS EPIGRAMMATIZED EPIGRAMMATIZER EPIGRAMMATIZES
EVANGELIARIUMS EVANGELICALISM FAMILIARNESSES FLAMMABILITIES FLEXITARIANISM
FORAMINIFERANS FORISFAMILIATE FORMALISATIONS FORMALIZATIONS FRACTIONALISMS
FRUITARIANISMS GERMANISATIONS GERMANIZATIONS GIGANTOMACHIAS GIGANTOMACHIES
GLAMORISATIONS GLAMORIZATIONS GRAMMATICALITY GRAMMATICISING GRAMMATICIZING
HAEMAGGLUTININ HAEMATOPOIESIS HAEMATOPOIETIC HAMARTHRITISES HAMARTIOLOGIES
HARMONISATIONS HARMONIZATIONS HAUSSMANNISING HAUSSMANNIZING HEXOSAMINIDASE
HIEROGRAMMATIC HUMANISTICALLY HYPERURICAEMIA ILLUMINATIONAL IMAGINABLENESS
IMMATERIALISED IMMATERIALISES IMMATERIALISMS IMMATERIALISTS IMMATERIALIZED
IMMATERIALIZES IMMATERIALNESS IMMUNOASSAYIST IMPARIDIGITATE IMPARISYLLABIC
IMPARTIALITIES IMPEACHABILITY IMPERATORIALLY IMPONDERABILIA IMPRACTICALITY
INFLAMMABILITY INFLAMMATORILY INFORMATICIANS INFRAMAXILLARY INTERANIMATION
INTERLAMINATED INTERLAMINATES INTERMARRIAGES INTERMAXILLARY INTRAMERCURIAL
IRRATIONALISMS ISODIAMETRICAL LEMMATISATIONS LEMMATIZATIONS LIBERTARIANISM
LIPOGRAMMATISM LIPOGRAMMATIST MACADAMISATION MACADAMIZATION MACHIAVELLIANS
MACHICOLATIONS MACHINEABILITY MACROPINACOIDS MACROPINAKOIDS MAGISTRALITIES
MAGISTRATESHIP MAGNETISATIONS MAGNETIZATIONS MAGNIFICATIONS MAINSTREAMINGS
MALADMINISTERS MALARIOLOGISTS MALLEABILITIES MALPIGHIACEOUS MANAGERIALISMS
MANAGERIALISTS MANIFESTATIONS MANIPULABILITY MANIPULATIVELY MANRIKIGUSARIS
MARKETISATIONS MARKETIZATIONS MARTYRISATIONS MARTYRIZATIONS MASSIFICATIONS
MATHEMATICIANS MATHEMATICISED MATHEMATICISES MATHEMATICISMS MATHEMATICIZED
MATHEMATICIZES MATRESFAMILIAS MATRIARCHALISM MATRICULATIONS MECHANICALISMS
MECHANISATIONS MECHANIZATIONS MEDIAEVALISTIC MEDIATISATIONS MEDIATIZATIONS
MEDICALISATION MEDICALIZATION MESATICEPHALIC METALLISATIONS METALLIZATIONS
METAPHYSICIANS MICROANATOMIES MICROPARASITES MICROPARASITIC MICROSPORANGIA
MILITARISATION MILITARIZATION MILLENARIANISM MINERALISATION MINERALIZATION
MINICALCULATOR MISACCEPTATION MISALLOCATIONS MISANTHROPICAL MISAPPLICATION
MISAPPRECIATED MISAPPRECIATES MISAPPROPRIATE MISARTICULATED MISARTICULATES
MISCALCULATING MISCALCULATION MISCATALOGUING MISCELLANARIAN MISEVALUATIONS
MISTRANSLATING MISTRANSLATION MORALISTICALLY MORPHINOMANIAC MORPHINOMANIAS
MOTIVATIONALLY MULLIGATAWNIES MULTICANDIDATE MULTIDIALECTAL MULTIFACTORIAL
MULTINATIONALS MULTIRACIALISM MUSICALISATION MUSICALIZATION MUTUALISATIONS
MUTUALIZATIONS NECESSARIANISM NEMATODIRIASES NEMATODIRIASIS NEOCAPITALISMS
NEURAMINIDASES NOMINALISATION NOMINALIZATION NONCHARISMATIC NORMALISATIONS
NORMALIZATIONS NUMISMATICALLY OCCASIONALISMS OLIGOCYTHAEMIA OPERATIONALISM
OPTIMALISATION OPTIMALIZATION ORCHIDOMANIACS ORGANISMICALLY PALAEOCLIMATIC
PALMATIPARTITE PALMIFICATIONS PANTOMIMICALLY PAPILLOMATOSIS PAPILLOMAVIRUS
PARADIGMATICAL PARAMETERISING PARAMETERIZING PARAMILITARIES PARLIAMENTINGS
PARTICULARISMS PATRESFAMILIAS PATRIARCHALISM PLAGIOCLIMAXES PRAGMATICALITY
PRAGMATISATION PRAGMATIZATION PREMAXILLARIES PREMILLENARIAN PRIMATOLOGICAL
PROLETARIANISM QUADRIGEMINATE QUINQUAGESIMAL RAMAPITHECINES RANDOMISATIONS
RANDOMIZATIONS REACCLIMATISED REACCLIMATISES REACCLIMATIZED REACCLIMATIZES
REACTIONARISMS REACTIONARYISM REAFFIRMATIONS REEXAMINATIONS REHUMANIZATION
REIMPLANTATION REMATERIALISED REMATERIALISES REMATERIALIZED REMATERIALIZES
REMORALISATION REMORALIZATION SABERMETRICIAN SANITARIANISMS SCAPULIMANCIES
SCHEMATISATION SCHEMATIZATION SCHISMATICALLY SEMASIOLOGICAL SEMIAUTOMATICS
SEMICARBAZIDES SEMIPALMATIONS SEMIPARASITISM SENSATIONALISM SEPARATIONISMS
STALACTITIFORM STIGMATISATION STIGMATIZATION STIGMATOPHILIA SUBMAXILLARIES
SUBSTANTIALISM SULFANILAMIDES SULPHANILAMIDE SUMMARISATIONS SUMMARIZATIONS
SUPRALIMINALLY SYSTEMATICIANS TALISMANICALLY THEATRICALISMS THEMATISATIONS
THEMATIZATIONS THERMALISATION THERMALIZATION THIOCARBAMIDES TOTIPALMATIONS
TRADITIONALISM TRAGICOMICALLY TRANSAMINATION TRANSMIGRATING TRANSMIGRATION
TRANSMIGRATIVE TRANSMISSIONAL TRAUMATISATION TRAUMATIZATION TRILATERALISMS
ULTRAMILITANTS ULTRAMINIATURE UNACCLIMATISED UNACCLIMATIZED UNAMIABILITIES
UNICAMERALISMS UNICAMERALISTS UNIFORMITARIAN UNILATERALISMS UNMAINTAINABLE
UNMALLEABILITY UNMATERIALISED UNMATERIALIZED UNSECTARIANISM UTILITARIANISM
VEGETARIANISMS VOCATIONALISMS