There are 478 thirteen-letter words containing A, B, I, O and R, https://www.bestwordlist.com/c/a/5/13letterwordswithabior.htm ABBREVIATIONS ABNORMALITIES ABORIGINALISM ABORIGINALITY ABORTIFACIENT ABSORBABILITY ABSTRACTIONAL ACINETOBACTER ACROBATICALLY ADORABILITIES ADSORBABILITY AEROBIOLOGIES AEROBIOLOGIST AEROEMBOLISMS AFFORDABILITY AGROBIOLOGIES AGROBIOLOGIST AILOUROPHOBES AILOUROPHOBIA AILOUROPHOBIC AILUROPHOBIAS ALPHABETIFORM AMBASSADORIAL AMBIDEXTEROUS ANAEROBICALLY ANTIBILLBOARD ANTIBOURGEOIS ANTIMICROBIAL ANTISCORBUTIC ANTITHROMBINS APPORTIONABLE ARABICISATION ARABICIZATION ARACHNOPHOBIA ARACHNOPHOBIC ARBITRATIONAL ARBORICULTURE ARBORISATIONS ARBORIZATIONS ARCHBISHOPRIC ARITHMOPHOBIA ASTRAPOPHOBIA ASTROBOTANIES ATTRIBUTIONAL AUTOBIOGRAPHY BACHELORSHIPS BACKCOUNTRIES BACKGROUNDING BACKWARDATION BACTERIOCIDAL BACTERIOCIDES BACTERIOLOGIC BACTERIOLYSES BACTERIOLYSIN BACTERIOLYSIS BACTERIOLYTIC BACTERIOPHAGE BACTERIOPHAGY BACTERIOSTATS BACTERIOTOXIN BACTERISATION BACTERIZATION BACULOVIRUSES BALLISTOSPORE BALMORALITIES BALSAMIFEROUS BANDERILLEROS BARBARISATION BARBARIZATION BARNSTORMINGS BASIDIOSPORES BEHAVIORISTIC BEHAVIOURALLY BEHAVIOURISMS BEHAVIOURISTS BERTILLONAGES BIBLIOGRAPHER BIBLIOGRAPHIC BIBLIOLATRIES BIBLIOLATRIST BIBLIOLATROUS BIBLIOTHECARY BIBLIOTHERAPY BIDIRECTIONAL BILDUNGSROMAN BIMOLECULARLY BIOBEHAVIORAL BIODEGRADABLE BIOELECTRICAL BIOGEOGRAPHER BIOGEOGRAPHIC BIOGRAPHISING BIOGRAPHIZING BIOINFORMATIC BIOMETRICALLY BIOMETRICIANS BIOTURBATIONS BIPROPELLANTS BLAMESTORMING BLAMEWORTHIER BLETHERATIONS BOARDINGHOUSE BOARDSAILINGS BOARISHNESSES BODYBOARDINGS BOILERMAKINGS BOILERPLATING BOOTSTRAPPING BORAGINACEOUS BOROSILICATES BOULEVARDIERS BRACHIOSAURUS BRAGGADOCIOUS BRAINSTORMERS BRAINSTORMING BRASSFOUNDING BRASSICACEOUS BREADBOARDING BROADCASTINGS BROMELIACEOUS BRUTALISATION BRUTALIZATION BURGLARIOUSLY CANCEROPHOBIA CANCERPHOBIAS CARBONIFEROUS CARBONISATION CARBONIZATION CARBONYLATING CARBONYLATION CARBOXYLATING CARBOXYLATION CARBURISATION CARBURIZATION CARDBOARDIEST CATEGORIZABLE CEREBROSPINAL CEREBROTONIAS CHIMNEYBOARDS CHLORAMBUCILS COACHBUILDERS COBALTIFEROUS COLLABORATING COLLABORATION COLLABORATIVE COLOURABILITY COMBINATORIAL COMBINATORICS COMPARABILITY CONCUBINARIES CONSIDERABLES CONSTRAINABLE CONTRABANDISM CONTRABANDIST CONTRABASSIST CONTRIBUTABLE COPYRIGHTABLE CORROBORATING CORROBORATION CORROBORATIVE CRISTOBALITES CROSSBANDINGS CROSSBARRINGS CYANOBACTERIA CYBERCHONDRIA DAUNORUBICINS DECARBONATING DECARBONATION DECARBONISERS DECARBONISING DECARBONIZERS DECARBONIZING DECARBURATION DECEREBRATION DEFIBRILLATOR DEFIBRINATION DEFORMABILITY DELIBERATIONS DEPLORABILITY DERMABRASIONS DIBENZOFURANS DINOTURBATION DISHONOURABLE DISHONOURABLY DISOBLIGATORY ELABORATORIES ELUCUBRATIONS EMBRYOLOGICAL EMBRYONICALLY EMBRYOTICALLY EQUILIBRATION EQUILIBRATORS EQUILIBRATORY ERYTHROPHOBIA EVAPORABILITY EXACERBATIONS EXORABILITIES EXORBITANCIES EXPORTABILITY EXPROBRATIONS FACTORABILITY FIBERISATIONS FIBERIZATIONS FIBRILLATIONS FIBROMYALGIAS FIBROSARCOMAS FIBROVASCULAR FORMABILITIES FORMIDABILITY FRANCOPHOBIAS GERONTOPHOBIA GLOBULARITIES GOVERNABILITY GRAPHOPHOBIAS GROUNDBAITING GUBERNATORIAL HEBDOMADARIES HEBRAISATIONS HEBRAIZATIONS HERBORISATION HERBORIZATION HETEROBLASTIC HEXOBARBITALS HIBERNISATION HIBERNIZATION HONOURABILITY HOUSEBREAKING HYBRIDISATION HYBRIDIZATION HYPERBOLOIDAL IAMBOGRAPHERS IMPONDERABLES IMPORTABILITY IMPROBABILITY IMPROVABILITY INCONSTRUABLE INCONVERSABLE INELABORATELY INELABORATING INEXORABILITY INOBSERVANCES INOBSERVANTLY INOBSERVATION INOPERABILITY INSUBORDINATE INSUPPORTABLE INSUPPORTABLY INTERBEHAVIOR INTEROPERABLE INTERORBITALS INVENTORIABLE IRRECOVERABLE IRRECOVERABLY ISOBAROMETRIC ISOCARBOXAZID JABBERWOCKIES KITEBOARDINGS LABORIOUSNESS LANDBOARDINGS LIBERATIONISM LIBERATIONIST LUBRICATIONAL MACROGLOBULIN MALABSORPTION MARIMBAPHONES MARIONBERRIES MARSIPOBRANCH MASTURBATIONS MATCHBOARDING MEGAHERBIVORE METAGRABOLISE METAGRABOLIZE METAGROBOLISE METAGROBOLIZE MICROBALANCES MICROFILMABLE MICROHABITATS MICROWAVEABLE MISBEHAVIOURS MISOBSERVANCE MOTORBOATINGS MOUNTAINBOARD MULTIVIBRATOR MYCOBACTERIAL MYCOBACTERIUM NEOLIBERALISM NEUROFIBRILAR NEUROFIBROMAS NITROBACTERIA NONABSORPTIVE NONBEHAVIORAL NONDELIBERATE NONDURABILITY NONEQUILIBRIA NONFILTERABLE NONLIBRARIANS NONPERISHABLE NONREFILLABLE NONSHRINKABLE OBLITERATIONS OBSCURANTISMS OBSCURANTISTS OBSERVABILITY OBSERVATIONAL OBSERVATORIES OBSTETRICALLY OBSTETRICIANS OBSTRUCTIONAL OBTEMPERATING OPERABILITIES OPISTHOBRANCH ORNITHOPHOBIA OUTBARGAINING OVERABOUNDING OVERAMBITIOUS OVERBALANCING OVERBEARINGLY OVERBLEACHING OVERBREATHING OVEREXCITABLE OVERLABOURING OVERSTABILITY PARABOLICALLY PARASYMBIONTS PARASYMBIOSES PARASYMBIOSIS PARASYMBIOTIC PARTICLEBOARD PENTOBARBITAL PERAMBULATION PERDITIONABLE PERSONIFIABLE PERTURBATIONS PHENOBARBITAL PHLEBOGRAPHIC POLYRIBOSOMAL PONDERABILITY PORTABILITIES POWERBOATINGS PREBIOLOGICAL PREFABRICATOR PRESBYACOUSIS PROBABILISTIC PROBABILITIES PROBATIONALLY PROBLEMATICAL PROBLEMATIZED PROBLEMATIZES PROBOSCIDEANS PROBOSCIDIANS PROCARBAZINES PROFITABILITY PROMOTABILITY PROPAGABILITY PROTUBERATING PROTUBERATION PROVABILITIES PROVERBIALISE PROVERBIALISM PROVERBIALIST PROVERBIALIZE PYROBALLOGIES RADIOBIOLOGIC RADIOLABELING RADIOLABELLED REABSORPTIONS REASONABILITY REATTRIBUTION RECALIBRATION RECOMBINATION REFORMABILITY REHABILITATOR REINFORCEABLE REKEYBOARDING RELUBRICATION REPROBATIVELY REPUBLICATION RESOLVABILITY REVERBATORIES REVERBERATION RHABDOMANCIES RHABDOMANTIST RHABDOVIRUSES RIBONUCLEASES ROADABILITIES ROADBUILDINGS ROBOTISATIONS ROBOTIZATIONS ROLLERBLADING ROUNDABOUTING SAILBOARDINGS SALMONBERRIES SCORBUTICALLY SCRAPBOOKINGS SCRIEVEBOARDS SCROBICULATED SECOBARBITALS SEMICARBAZONE SHOPBREAKINGS SIMARUBACEOUS SKATEBOARDING SNOBBOCRACIES SNOBOGRAPHIES SNOWBOARDINGS SOLDERABILITY SORBABILITIES SORBEFACIENTS SORBITISATION SORBITIZATION SPRINGBOARDED STABILISATORS STABILIZATORS STORYBOARDING STROBILACEOUS STROBILATIONS SUBARACHNOIDS SUBARCUATIONS SUBARRHATIONS SUBCATEGORIES SUBCATEGORISE SUBCATEGORIZE SUBCONTRARIES SUBCORIACEOUS SUBDEACONRIES SUBEQUATORIAL SUBERISATIONS SUBERIZATIONS SUBFACTORIALS SUBGENERATION SUBIRRIGATION SUBORDINARIES SUBORDINATELY SUBORDINATING SUBORDINATION SUBORDINATIVE SUBORDINATORS SUBSATURATION SUBSTANTIATOR SUBSTRACTIONS SUBTROPICALLY SUBVENTIONARY SUBVERSIONARY SURFBOARDINGS TAMBOURINISTS TERATOPHOBIAS THIOCARBAMIDE THROMBOKINASE THROMBOPHILIA TIMBROMANIACS TRICARBOXYLIC TRIPLOBLASTIC TROPHOBLASTIC TROUBLEMAKING TUBERCULATION TUBOCURARINES TURBOCHARGING UMBRACULIFORM UNINFORCEABLE UNPOLARISABLE UNPOLARIZABLE UNPROBLEMATIC UNWORKABILITY URBANISATIONS URBANIZATIONS URBANOLOGISTS VAPOURABILITY VASOINHIBITOR VERBALISATION VERBALIZATION VERBIFICATION VERBIGERATION VERTEBRATIONS VIBRAPHONISTS VIBRATIONLESS VOCABULARIANS WAKEBOARDINGS WATERBOARDING WORKABILITIES