There are 621 thirteen-letter words containing 2A, C, O and R, https://www.bestwordlist.com/c/a/5/13letterwordswithaacor.htm ABORTIFACIENT ABSTRACTIONAL ACARIDOMATIUM ACARODOMATIUM ACCELERATIONS ACCOMMODATORS ACCREDITATION ACCULTURATION ACHLORHYDRIAS ACHROMATICITY ACHROMATISING ACHROMATIZING ACHROMATOPSIA ACINETOBACTER ACROBATICALLY ACRONYMICALLY ACTINOTHERAPY ACTINOURANIUM ADIAPHORISTIC ADRENALECTOMY AERIFICATIONS AEROACOUSTICS AERODYNAMICAL AEROMECHANICS AGRANULOCYTES AGROCHEMICALS AGRONOMICALLY AHISTORICALLY AIRCRAFTWOMAN AIRCRAFTWOMEN ALLEGORICALLY AMARANTACEOUS AMINOACIDURIA ANACHRONISTIC ANACHRONOUSLY ANAEROBICALLY ANAPHORICALLY ANAPHRODISIAC ANEMOMETRICAL ANFRACTUOSITY ANGIOSARCOMAS ANTICORPORATE ANTIMICROBIAL ANTINARCOTICS ANTIROMANTICS APERIODICALLY APHRODISIACAL APOCHROMATISM APPRECIATIONS APPROPRIACIES ARABICISATION ARABICIZATION ARACHNOIDITIS ARACHNOLOGIES ARACHNOLOGIST ARACHNOPHOBES ARACHNOPHOBIA ARACHNOPHOBIC ARAEOMETRICAL ARCHAEOBOTANY ARCHAEOLOGIES ARCHAEOLOGIST ARCHAEOMETRIC ARCHAEOPTERYX ARCHAEORNISES ARCHAEZOOLOGY ARCHEGONIATES ARCHEOLOGICAL ARCHIDIACONAL ARCHIPELAGOES ARCHOSAURIANS ARISTOCRACIES ARISTOCRATISM ARISTOLOCHIAS AROMATICITIES ARTICULATIONS ARUNDINACEOUS ASTROCYTOMATA ASTRODYNAMICS ASTROMETRICAL ASTRONAUTICAL ASTROPHYSICAL ATMOSPHERICAL AUTHENTICATOR AUTOGRAPHICAL AUTORICKSHAWS AVERRUNCATION AVERRUNCATORS BACKSWORDSMAN BACKWARDATION BACTERIOCIDAL BACTERIOPHAGE BACTERIOPHAGY BACTERIOSTATS BACTERISATION BACTERIZATION BETACAROTENES BORAGINACEOUS BRACHIOSAURUS BRAGGADOCIOUS BRASSICACEOUS BROADCASTINGS CACOGRAPHICAL CAESAROPAPISM CALCARIFEROUS CALEFACTORIES CALORIFICALLY CAMERAPERSONS CAMPANOLOGERS CAMPHORACEOUS CAMPYLOBACTER CANCEROPHOBIA CANCERPHOBIAS CAPNOGRAPHIES CAPRIFICATION CARBOHYDRASES CARBOHYDRATES CARBONISATION CARBONIZATION CARBONYLATING CARBONYLATION CARBOXYLATING CARBOXYLATION CARBURISATION CARBURIZATION CARCINOMATOID CARCINOMATOUS CARDBOARDIEST CARDIOGRAPHER CARDIOGRAPHIC CARDIOLOGICAL CARDIOPATHIES CARDIOPLEGIAS CARNIFICATION CARRYFORWARDS CARTELISATION CARTELIZATION CARTILAGINOUS CARTOGRAPHERS CARTOGRAPHIES CATASTROPHISM CATASTROPHIST CATEGOREMATIC CATEGORICALLY CATEGORIZABLE CATHODOGRAPHS CATHODOGRAPHY CAUTERISATION CAUTERIZATION CEPHALOTHORAX CERAUNOGRAPHS CEROGRAPHICAL CHALCOGRAPHER CHALCOGRAPHIC CHANGEAROUNDS CHARTOGRAPHER CHARTOGRAPHIC CHIROMANTICAL CHLOROPLASTAL CHOLANGIOGRAM CHONDROCRANIA CHROMATICALLY CHROMATOGRAMS CHROMATOGRAPH CHROMATOPSIAS CICATRISATION CICATRIZATION CINEMATOGRAPH CLAIRVOYANCES CLAIRVOYANTLY CLAPPERBOARDS CLARIFICATION CLAUSTRATIONS CLIMATOGRAPHY COACERVATIONS COASTGUARDMAN COASTGUARDMEN COCARBOXYLASE COLLABORATING COLLABORATION COLLABORATIVE COLLABORATORS COLLATERALISE COLLATERALITY COLLATERALIZE COMBINATORIAL COMMEASURABLE COMMENTARIATS COMMISSARIATS COMMUNAUTAIRE COMMUNITARIAN COMPARABILITY COMPARATIVELY COMPARATIVIST COMPARTMENTAL CONFABULATORS CONFABULATORY CONFARREATION CONFLAGRATING CONFLAGRATION CONFLAGRATIVE CONGRATULABLE CONGRATULANTS CONGRATULATED CONGRATULATES CONGRATULATOR CONNATURALISE CONNATURALITY CONNATURALIZE CONSERVATORIA CONSTRAINABLE CONTAMINATORS CONTRABANDISM CONTRABANDIST CONTRABASSIST CONTRABASSOON CONTRABBASSOS CONTRACTIONAL CONTRACTUALLY CONTRAFAGOTTI CONTRAFAGOTTO CONTRALATERAL CONTRAOCTAVES CONTRARIANISM CONTRASEXUALS CONVERTAPLANE COPARCENARIES COPLANARITIES CORRELATIONAL COSURFACTANTS COUNTERATTACK CRANIOLOGICAL CRASSULACEOUS CRYSTALLOIDAL CURARISATIONS CURARIZATIONS CYANOACRYLATE CYANOBACTERIA CYCLOPARAFFIN DACTYLOGRAPHY DECARBONATING DECARBONATION DECARBONATORS DECARBOXYLASE DECARBOXYLATE DECARBURATION DECLAMATORILY DECLARATORILY DEMOGRAPHICAL DERACINATIONS DEXTROCARDIAC DEXTROCARDIAS DICTATORIALLY DILACERATIONS DIVARICATIONS DOCTRINARIANS DOCUMENTARIAN DRACONIANISMS ECOTARIANISMS ECTOPARASITES ECTOPARASITIC ELASMOBRANCHS ENCEPHALOGRAM ENCHONDROMATA ENDOPARASITIC ENTOMOSTRACAN ERGATOCRACIES ETHEROMANIACS ETHNOGRAPHICA EXACERBATIONS EXCLAMATORILY EXTRATROPICAL FACTORABILITY FACTORISATION FACTORIZATION FIBROSARCOMAS FIBROVASCULAR FLUOROACETATE FORECARRIAGES FORMULAICALLY FRACTIONALISE FRACTIONALISM FRACTIONALIST FRACTIONALIZE FRACTIONATING FRACTIONATION FRACTIONATORS FRACTOSTRATUS FRANCISATIONS FRANCIZATIONS FRANCOPHOBIAS GALACTOMETERS GALACTORRHEAS GALACTORRHOEA GALVANOMETRIC GALVANOTROPIC GASTROLOGICAL GASTROMANCIES GASTRONOMICAL GERATOLOGICAL GRAPHOLOGICAL GRATICULATION GRATIFICATION GYNAECOCRATIC HALLUCINATORS HALLUCINATORY HARUSPICATION HIEROCRATICAL HOLOPARASITIC HOMALOGRAPHIC HYDNOCARPATES HYDROPATHICAL HYDROSTATICAL HYPERSARCOMAS HYPONATRAEMIC IATROCHEMICAL IDEOGRAMMATIC IDEOGRAPHICAL INCARCERATION INCARCERATORS INCARDINATION INCARNATIONAL INCRASSATIONS INFORMATICIAN INORGANICALLY INTERACTIONAL INTERCALATION INTRAOCULARLY INTRATHORACIC ISOCARBOXAZID KERATOPLASTIC LACHRYMATIONS LAPAROSCOPIES LAPAROSCOPIST LIPOGRAMMATIC LOGARITHMICAL LOGOGRAMMATIC LOGOGRAPHICAL LOWERCLASSMAN LUBRICATIONAL LYMPHOSARCOMA MACARONICALLY MACHAIRODONTS MACROCEPHALIA MACROCEPHALIC MACROCLIMATES MACROCLIMATIC MACRODACTYLIC MACRODIAGONAL MACROMUTATION MACROPINACOID MACROPINAKOID MAJOLICAWARES MALACOSTRACAN MANUFACTORIES MARCONIGRAPHS MARSIPOBRANCH MASTICATORIES MATCHBOARDING MATRICULATION MATRICULATORS MATRICULATORY MATRIFOCALITY MATRILOCALITY MEGAKARYOCYTE MEGALOCARDIAS MELODRAMATICS MEMBRANACEOUS METACHROMATIC MICROANALYSES MICROANALYSIS MICROANALYSTS MICROANALYTIC MICROBALANCES MICROFILARIAE MICROFILARIAL MICROFILARIAS MICROHABITATS MICROMANAGERS MICROMANAGING MICROPARASITE MICROVASCULAR MICROWAVEABLE MINERALOGICAL MISCALCULATOR MONARCHICALLY MONOGRAMMATIC MONOGRAPHICAL MYCOBACTERIAL NANOPARTICLES NARCOANALYSES NARCOANALYSIS NARCOTISATION NARCOTIZATION NARROWCASTING NECROMANTICAL NEUROANATOMIC NEUROPATHICAL NEUROVASCULAR NITROBACTERIA NOMENCLATURAL NOMOGRAPHICAL NONAPPEARANCE NONBROADCASTS NONCHARACTERS NONCOMPARABLE NONPARAMETRIC NONSECTARIANS NONTHEATRICAL OCEANOGRAPHER OCEANOGRAPHIC OCHLOCRATICAL OCTOGENARIANS ORACULARITIES ORCHIDOMANIAC ORCHIDOMANIAS OREOGRAPHICAL ORGANOGRAPHIC ORGANOLOGICAL ORGIASTICALLY ORTHOPAEDICAL OSTEOSARCOMAS OVERABUNDANCE OVERBALANCING OVERDRAMATICS OVERPACKAGING PALAEOCRYSTIC PALAEOCURRENT PALAEOGRAPHIC PALINDROMICAL PANCHROMATISM PANHARMONICON PANORAMICALLY PANPHARMACONS PANTISOCRATIC PAPAVERACEOUS PAPYROLOGICAL PARABOLICALLY PARACHRONISMS PARACYANOGENS PARADOXICALLY PARAGOGICALLY PARAMOUNTCIES PARAPSYCHOSES PARAPSYCHOSIS PARASITOLOGIC PARASYMBIOTIC PARENCEPHALON PARFOCALISING PARFOCALITIES PARFOCALIZING PAROCCIPITALS PAROCHIALISED PAROCHIALISES PAROCHIALISMS PAROCHIALIZED PAROCHIALIZES PARTHENOCARPY PARTICIPATION PARTICIPATORS PARTICIPATORY PARTICLEBOARD PATRIFOCALITY PATRIOTICALLY PEDANTOCRATIC PHARMACOGNOSY PHARMACOLOGIC PHARMACOPEIAL PHARMACOPEIAS PHARMACOPOEIA PHARMACOPOEIC PHYSHARMONICA PISCATORIALLY PLANTOCRACIES PLUTOCRATICAL POLAROGRAPHIC POLYCARBONATE POSTCRANIALLY POSTTRAUMATIC PRAEFECTORIAL PRAXEOLOGICAL PRECAUTIONARY PREFABRICATOR PREVARICATION PREVARICATORS PREVOCATIONAL PROBLEMATICAL PROCAPITALIST PROCARBAZINES PROCATHEDRALS PROCELLARIANS PROCLAMATIONS PROCRASTINATE PROCREATIONAL PROCURATORIAL PROSAICALNESS PROSENCEPHALA PROSENCHYMATA PSEUDOSCALARS QUADRAPHONICS QUADRILOCULAR QUALIFICATORS QUALIFICATORY QUANGOCRACIES QUARTODECIMAN RACEMISATIONS RACEMIZATIONS RADICULOPATHY RADIOACTIVATE RADIOACTIVELY RADIOACTIVITY RADIOCHEMICAL RADIOLOCATION RADIOPACITIES RAMIFICATIONS RAPACIOUSNESS RAREFACTIONAL RAREFICATIONS RATIFICATIONS RATIOCINATING RATIOCINATION RATIOCINATIVE RATIOCINATORS RATIOCINATORY RATIONALISTIC REACTIONARIES REACTIONARISM REACTIONARIST REACTIVATIONS REALLOCATIONS REAPPLICATION REBROADCASTED RECALCULATION RECALIBRATION RECATALOGUING RECONTAMINATE REESCALATIONS REINCARNATION RETRACTATIONS REVACCINATION RHABDOMANCERS RHABDOMANCIES RHAMPHOTHECAE RHAPSODICALLY RHIZOCEPHALAN ROMANTICALITY SACCHAROMETER SACCHAROMETRY SACCHAROMYCES SACERDOTALISE SACERDOTALISM SACERDOTALIST SACERDOTALIZE SACRALISATION SACRALIZATION SACROSANCTITY SARCOPHAGUSES SARMENTACEOUS SCALARIFORMLY SCANDALMONGER SCARAMOUCHING SCARIFICATION SCARIFICATORS SCATTERATIONS SCENARISATION SCENARIZATION SCLERODERMATA SCLEROMALACIA SCRAPERBOARDS SCRATCHBOARDS SCROPHULARIAS SECOBARBITALS SEMICARBAZONE SIMARUBACEOUS SPADICIFLORAL SPERMATOCIDAL SPERMATOTHECA STAYCATIONERS STRATOCRACIES STRATOVOLCANO SUBARACHNOIDS SUBARCUATIONS SUBFACTORIALS TACHOMETRICAL TARIFFICATION TAUTOMETRICAL TERATOLOGICAL TETRADRACHMON THALASSOCRACY THALASSOCRATS THALATTOCRACY THEOREMATICAL THERMOBALANCE THIOCARBAMIDE THORACOPLASTY THRASONICALLY THROATLATCHES TIMBROMANIACS TOPOGRAPHICAL TRACTORATIONS TRANSACTIONAL TRANSLOCATING TRANSLOCATION TRANSPORTANCE TRANSTHORACIC TRIATOMICALLY TRICHOMONADAL TRISOCTAHEDRA TROPHALLACTIC TUBERCULOMATA TYPOGRAPHICAL ULTRACAUTIOUS ULTRAROMANTIC VALEDICTORIAN VENOGRAPHICAL VOCABULARIANS WAISTCOATEERS WOODCRAFTSMAN XANTHOCHROIAS XANTHOCHROMIA XYLOGRAPHICAL