There are 463 twelve-letter words containing A, C, E, L and Y, https://www.bestwordlist.com/c/a/5/12letterwordswithacely.htm ABSTRACTEDLY ACADEMICALLY ACCELERATORY ACCENTUALITY ACCIDENTALLY ACCUSATIVELY ACETALDEHYDE ACETYLATIONS ACHLAMYDEOUS ACROGENOUSLY ADJECTIVALLY ADJUNCTIVELY ADOLESCENTLY AFFLICTIVELY AGRANULOCYTE ALCHEMICALLY ALKALESCENCY ALLYCHOLLIES ALYCOMPAINES AMYLOPECTINS ANELASTICITY ANTECEDENTLY ANTICYCLONES ARCHETYPALLY ARCHETYPICAL ARTICULATELY ASTRICTIVELY ASYMMETRICAL ATHLETICALLY ATTRACTIVELY AURICULATELY AUTOCATALYSE AUTOCATALYZE AUTOECIOUSLY BACKHANDEDLY BACTERIOLOGY BALLETICALLY BATHETICALLY BATHYPELAGIC BEATIFICALLY BELLYACHINGS BENEFICIALLY BICARPELLARY BIOCATALYSES BLASTOCHYLES BONNYCLABBER BRACHYCEPHAL BRACHYLOGIES CADAVEROUSLY CAESPITOSELY CALCAREOUSLY CALCULATEDLY CALYCANTHEMY CALYCOIDEOUS CALYPTROGENS CANDESCENTLY CANDYFLOSSES CAPACITIVELY CARBONYLATED CARBONYLATES CARBOXYLASES CARBOXYLATED CARBOXYLATES CARBYLAMINES CARDIOMEGALY CATEGORIALLY CELEBREALITY CENTENNIALLY CENTESIMALLY CEPHALICALLY CEPHALOMETRY CEREMONIALLY CHALCOPYRITE CHANGELESSLY CHASTENINGLY CHERUBICALLY CHESSPLAYERS CHIMERICALLY CHLORENCHYMA CHOLERICALLY CLAIRVOYANCE CLAPTRAPPERY CLATTERINGLY CLEANABILITY CLEAVABILITY COETANEOUSLY COGITATIVELY COLLATERALLY COLLEGIALITY COLLEGIATELY COLLENCHYMAS COLLINEARITY COMMENSALITY COMMERCIALLY COMPLACENTLY CONCEALINGLY CONCEPTUALLY CONGENIALITY CONGENITALLY CONSENSUALLY CONSIDERABLY CONSUMMATELY CONTEXTUALLY CONTRACTEDLY CONTUBERNYAL CONVENTUALLY CONVERSANTLY COORDINATELY COPULATIVELY CORPOREALITY COSMETICALLY COTYLEDONARY COUNTERPLAYS COUNTERRALLY COURAGEOUSLY COVENANTALLY CRETACEOUSLY CRYSTALISERS CRYSTALIZERS CRYSTALLINES CRYSTALLISED CRYSTALLISER CRYSTALLISES CRYSTALLITES CRYSTALLIZED CRYSTALLIZER CRYSTALLIZES CUMULATIVELY CURVACEOUSLY CYBERATHLETE CYBERNETICAL CYBERSTALKER CYCLANDELATE CYCLAZOCINES CYCLOALKANES CYCLOHEXANES CYCLOPAEDIAS CYCLOPAEDIST CYCLOPENTANE CYCLOPLEGIAS CYCLOPROPANE CYCLOSTOMATE CYTOCHEMICAL CYTOSKELETAL DECALCIFYING DECASYLLABIC DECASYLLABLE DECIDABILITY DECORATIVELY DECREASINGLY DEMONIACALLY DESPOTICALLY DETRACTINGLY DETRACTIVELY DIALECTOLOGY DICARPELLARY DIETETICALLY DISCREPANTLY DISLOCATEDLY DISTRACTEDLY DIURETICALLY DIVARICATELY DODECASTYLES DOMESTICALLY DUODECIMALLY ECLECTICALLY ECLIPTICALLY ECOLOGICALLY ECONOMICALLY ECOTYPICALLY ECSTATICALLY ECUMENICALLY EFFECTUALITY EGOISTICALLY ELECTABILITY ELECTORIALLY ELECTRICALLY ELLIPTICALLY ELOCUTIONARY EMASCULATORY EMPATHICALLY EMPHATICALLY ENCHANTINGLY ENCLITICALLY ENCYCLOPEDIA ENTRANCINGLY ENTROPICALLY ENZOOTICALLY EPICYCLOIDAL EPIDEMICALLY EPISODICALLY EQUIVOCALITY ESOTERICALLY ESTHETICALLY ETYMOLOGICAL EUCALYPTOLES EUCALYPTUSES EUPHONICALLY EUPHORICALLY EURHYTHMICAL EUSTATICALLY EVANESCENTLY EXCHANGEABLY EXCITABILITY EXCLUSIONARY EXECRATIVELY EXEGETICALLY EXOTERICALLY EXTRACTIVELY FAIRNYTICKLE FAIRNYTICLES FASCINATEDLY FLAMBOYANCES FORENSICALLY FRENETICALLY GALACTOMETRY GENICULATELY GEODETICALLY GEODYNAMICAL GEOLOGICALLY GEOSYNCLINAL GLYCERINATED GLYCERINATES GLYCOSIDASES GLYCOSYLATED GLYCOSYLATES GLYPTOTHECAE GRANULOCYTES GYNAECOLOGIC HAEMATOCRYAL HAEMATOXYLIC HELICOIDALLY HELLACIOUSLY HEPATICOLOGY HERALDICALLY HERBACEOUSLY HERBICIDALLY HERMETICALLY HERMITICALLY HETERODACTYL HEXADACTYLIC HIERATICALLY HOMEOTYPICAL HYDRAULICKED HYDROCEPHALI HYDROCEPHALY HYDROELASTIC HYGIENICALLY HYPERALGESIC HYPERBOLICAL HYPERDACTYLY HYPERDULICAL HYPERPLASTIC HYPERTYPICAL HYPOCALCEMIA HYPOCALCEMIC HYPOGLYCEMIA HYPOTHETICAL HYPOVOLAEMIC HYSTERICALLY ILLEGITIMACY IMMACULATELY INACCESSIBLY INACCURATELY INCHOATIVELY INCIDENTALLY INCREASINGLY INDECLINABLY INDELICATELY INDICATIVELY INEFFACEABLY INELASTICITY INERADICABLY INEXPLICABLY INEXTRICABLY INTERFACULTY INTERLACEDLY INTERLOCALLY LACERABILITY LACHRYMARIES LACHRYMOSELY LANCEOLATELY LARYNGECTOMY LARYNGOSCOPE LEACHABILITY LENTICULARLY LEPTODACTYLS LEXICOGRAPHY LYCANTHROPES MACROCEPHALY MAENADICALLY MAGNETICALLY MAJESTICALLY MECAMYLAMINE MECHANICALLY MELANCHOLILY MENDACIOUSLY MEPHITICALLY MERCURIALITY MERISTICALLY MESMERICALLY METALLICALLY METAPHYSICAL METEORICALLY METHACRYLATE METHODICALLY MICROCEPHALY MNEMONICALLY MOLECULARITY MULTIVALENCY MYELOBLASTIC MYSTICALNESS NECTOCALYCES NEOLOGICALLY NEOTERICALLY NEUROTICALLY NEUROTYPICAL NOEMATICALLY NYCHTHEMERAL OCCIDENTALLY OCTAHEDRALLY OCTOSYLLABLE OLEANDOMYCIN OLFACTOMETRY OPALESCENTLY OPERATICALLY ORCHESTRALLY OROGENICALLY ORTHOCEPHALY OVERCLASSIFY OXYACETYLENE OXYCEPHALIES OXYCEPHALOUS PALEOECOLOGY PANICULATELY PATELLECTOMY PATHETICALLY PEDANTICALLY PENTADACTYLE PENTADACTYLS PENTADACTYLY PENTAVALENCY PERCEPTUALLY PERIODICALLY PHENOTYPICAL PHONEMICALLY PHONETICALLY PHYLACTERIES PHYLETICALLY PHYLLOCLADES PHYSICALIZED PHYSICALIZES PHYSICALNESS PINEALECTOMY PLACENTOLOGY PLEBISCITARY POLICYMAKERS POLYCHAETOUS POLYCYTHEMIA POLYNUCLEATE POLYVALENCES PRECARIOUSLY PRELATICALLY PREMEDICALLY PROCEDURALLY PROTEOGLYCAN PROTRACTEDLY PSYCHEDELIAS PSYCHOBABBLE PSYCHODELIAS PSYCHOSEXUAL PTERODACTYLE PTERODACTYLS PYELOGRAPHIC PYROCATECHOL PYROCHEMICAL PYROMETRICAL RADIOECOLOGY RADIOLUCENCY RALLYCROSSES RECIPROCALLY RECOGNISABLY RECOGNIZABLY RECONCILABLY RECREATIVELY RECYCLEABLES REFRACTIVELY REFRACTORILY REPROACHABLY RETICULATELY RETRACTILITY RETRACTIVELY REVOCABILITY RHETORICALLY SACCHARINELY SACERDOTALLY SALICYLAMIDE SANCTIFIEDLY SCATTERINGLY SCLERENCHYMA SEMANTICALLY SEMIMYSTICAL SEMIOTICALLY SEPTICIDALLY SEPULCHRALLY SEQUACIOUSLY SERAPHICALLY SHAMEFACEDLY SPECIFICALLY SPHERICALITY SUBCENTRALLY SUBSPECIALTY SUCCESSANTLY SUPERCILIARY SYLLABICATED SYLLABICATES SYNDACTYLIES SYNDETICALLY SYNECTICALLY SYNERGICALLY SYSTEMATICAL SYSTEMICALLY TEACHABILITY TECHNICALITY TECTONICALLY TELERGICALLY TENDENCIALLY TERRIFICALLY TETRACYCLINE TETRADACTYLS TETRADACTYLY TETRAVALENCY THEATRICALLY THEISTICALLY THEMATICALLY THEURGICALLY TRACEABILITY TRANSCALENCY TRANSILIENCY TRANSLUCENCY TUBERCULARLY TYPICALITIES UNACCEPTABLY UNAFFECTEDLY UNCHANGEABLY UNDETECTABLY UNEROTICALLY UNGRACEFULLY UNHEROICALLY UNHYSTERICAL UNICAMERALLY UNNOTICEABLY UNPEACEFULLY UNPOETICALLY UNQUENCHABLY UNRECYCLABLE UNSEARCHABLY VERIDICALITY VERMICULARLY VERNACULARLY VESICULARITY VINYLCYANIDE YELLOWJACKET