There are 556 fourteen-letter words containing A, B, O and S, https://www.bestwordlist.com/c/a/4/14letterwordswithabos.htm ABDOMINOPLASTY ABOMINABLENESS ABORIGINALISMS ABORTIFACIENTS ABORTIVENESSES ABSOLUTENESSES ABSORBEFACIENT ABSORPTIOMETER ABSORPTIOMETRY ABSORPTIVENESS ABSORPTIVITIES ABSTEMIOUSNESS ABSTENTIONISMS ABSTENTIONISTS ABSTRACTIONISM ABSTRACTIONIST ACCOMPLISHABLE ACINETOBACTERS ACTINOBACILLUS ADOPTABILITIES ADORABLENESSES AEROBALLISTICS AEROBIOLOGISTS AGROBIOLOGISTS AGROBUSINESSES AILOUROPHOBIAS ALLOANTIBODIES ALLOWABILITIES AMBASSADORSHIP AMBIDEXTROUSLY AMPHIBIOUSNESS ANTIMICROBIALS ANTISCORBUTICS ANTISUBVERSION ARABICISATIONS ARABICIZATIONS ARACHNOPHOBIAS ARACHNOPHOBICS ARBORICULTURES ARCHBISHOPRICS ARCHEOBOTANIES ARCHEOBOTANIST ARITHMOPHOBIAS ASTRAPOPHOBIAS ASTROBIOLOGIES ASTROBIOLOGIST AUTOANTIBODIES AUTOMOBILITIES AVOWABLENESSES BACKWARDATIONS BACTERIOLOGIES BACTERIOLOGIST BACTERIOLYSINS BACTERIOPHAGES BACTERIOSTASES BACTERIOSTASIS BACTERIOSTATIC BACTERIOTOXINS BACTERISATIONS BACTERIZATIONS BALKANISATIONS BALKANIZATIONS BALLISTOSPORES BALSAMINACEOUS BAMBOOZLEMENTS BARBARISATIONS BARBARIZATIONS BASIDIOMYCETES BASIDIOSPOROUS BASTARDISATION BASTARDIZATION BEATIFICATIONS BEHAVIOURISTIC BENEDICTIONALS BENEFICIATIONS BENZIMIDAZOLES BERBERIDACEOUS BIBLIOGRAPHERS BIBLIOGRAPHIES BIBLIOLATRISTS BIBLIOPHAGISTS BICONDITIONALS BILDUNGSROMANS BINOCULARITIES BIOACCUMULATES BIOACOUSTICIAN BIOAERONAUTICS BIOASTRONOMIES BIODEGRADABLES BIOGEOGRAPHERS BIOGEOGRAPHIES BIOINFORMATICS BIOMATHEMATICS BIOREGIONALISM BIOREGIONALIST BIOSTATISTICAL BIOSYSTEMATICS BIOSYSTEMATIST BIPOLARISATION BISPHOSPHONATE BITUMINISATION BLAMESTORMINGS BLAMEWORTHIEST BLANKETFLOWERS BLEPHAROPLASTS BLEPHAROPLASTY BLEPHAROSPASMS BOARDERCROSSES BOARDINGHOUSES BOASTFULNESSES BONEHEADEDNESS BOUGAINVILLEAS BOUILLABAISSES BOWDLERISATION BRAINSTORMINGS BRANCHIOSTEGAL BRASSFOUNDINGS BREASTSTROKERS BRONCHIECTASES BRONCHIECTASIS BRONCHOSPASTIC BRONTOSAURUSES BRUTALISATIONS BRUTALIZATIONS BUFFALOBERRIES CAMPYLOBACTERS CANCEROPHOBIAS CARBONISATIONS CARBONIZATIONS CARBONYLATIONS CARBOXYLATIONS CARBURISATIONS CARBURIZATIONS CLAUSTROPHOBES CLAUSTROPHOBIA CLAUSTROPHOBIC COACHBUILDINGS COCARBOXYLASES COLLABORATIONS COLLABORATIVES COLLAPSABILITY COLLAPSIBILITY COLORABILITIES COLOURABLENESS COMMUTABLENESS COMPARABLENESS COMPASSIONABLE COMPATIBLENESS COMPENSABILITY COMPLIABLENESS COMPUTERISABLE CONCUBITANCIES CONDENSABILITY CONFABULATIONS CONNUBIALITIES CONSTABLESHIPS CONSTABLEWICKS CONSTABULARIES CONSTRUABILITY CONSUBSTANTIAL CONTABESCENCES CONTESTABILITY CONTRABANDISMS CONTRABANDISTS CONTRABASSISTS CONTRABASSOONS CONTRIBUTARIES CORROBORATIONS CORROBORATIVES COUNTABILITIES CROSSABILITIES CUCURBITACEOUS CYBERCHONDRIAS DAUGHTERBOARDS DEAMBULATORIES DEBONAIRNESSES DECARBONATIONS DECARBOXYLASES DECARBOXYLATES DECARBURATIONS DECEREBRATIONS DEFIBRILLATORS DEFIBRINATIONS DEMOBILISATION DEPLORABLENESS DESOBLIGEANTES DETONABILITIES DIABETOLOGISTS DIABOLICALNESS DIAGNOSABILITY DIAGONALISABLE DINOTURBATIONS DISAMBIGUATION DISAPPROBATION DISAPPROBATIVE DISAPPROBATORY DISATTRIBUTION DISCOMBOBERATE DISCOMBOBULATE DISCOMFORTABLE DISCOMMENDABLE DISCONFORMABLE DISCOURAGEABLE DISEMBARKATION DISOBLIGATIONS DISPOSABLENESS DISSOCIABILITY DISSOLVABILITY DISTRIBUTIONAL DODECASYLLABIC DODECASYLLABLE DOUBLESPEAKERS EQUILIBRATIONS ERYTHROBLASTIC ERYTHROPHOBIAS ETHNOBOTANISTS EUPHORBIACEOUS FABULOUSNESSES FASHIONABILITY FAVORABILITIES FAVOURABLENESS FIBROSARCOMATA FISSIONABILITY FLOATABILITIES FORESEEABILITY FORGEABILITIES FORMIDABLENESS FUNAMBULATIONS GERONTOPHOBIAS GLABROUSNESSES GLIOBLASTOMATA GLOBALISATIONS GLOBALIZATIONS GLOBULARNESSES GOVERNABLENESS GROUNDBREAKERS GYROSTABILISER GYROSTABILIZER HAEMATOBLASTIC HEMIMETABOLOUS HERBORISATIONS HERBORIZATIONS HETEROBLASTIES HIBERNISATIONS HIBERNIZATIONS HOLOMETABOLISM HOLOMETABOLOUS HONORABILITIES HONOURABLENESS HOSPITABLENESS HOUSEBREAKINGS HYBRIDISATIONS HYBRIDIZATIONS IMMOBILISATION IMMOVABILITIES IMMOVEABLENESS IMPRESSIONABLE IMPROBABLENESS IMPROVABLENESS INCONCEIVABLES INCONSCIONABLE INCONSIDERABLE INCONSIDERABLY INDECOMPOSABLE INDEMONSTRABLE INDEMONSTRABLY INDISCOVERABLE INEXORABLENESS INOBSERVATIONS INOPERABLENESS INSALUBRIOUSLY INSUBORDINATES INSURMOUNTABLE INSURMOUNTABLY INTERBEHAVIORS INVIOLABLENESS IRRECOGNISABLE ISOCARBOXAZIDS KNOWABLENESSES LABEFACTATIONS LABIALISATIONS LABIALIZATIONS LABOUREDNESSES LABRADORESCENT LACTOGLOBULINS LIBERALISATION LIBERATIONISMS LIBERATIONISTS LOCALISABILITY LOVEABLENESSES MACROGLOBULINS MALABSORPTIONS MARSIPOBRANCHS MATCHBOARDINGS MEGAHERBIVORES MEMORABILITIES METAGRABOLISED METAGRABOLISES METAGRABOLIZES METAGROBOLISED METAGROBOLISES METAGROBOLIZES MISATTRIBUTION MISOBSERVANCES MODIFIABLENESS MODULABILITIES MONOSYLLABISMS MOULDABILITIES MOUNTAINBOARDS MOUNTEBANKINGS MOUNTEBANKISMS MOUTHBREATHERS MOVEABLENESSES MUCOMEMBRANOUS MULTIVIBRATORS NANOPUBLISHING NEOLIBERALISMS NEPHROBLASTOMA NEUROBLASTOMAS NEUROFEEDBACKS NONANTIBIOTICS NONCONDENSABLE NONESTABLISHED NONEXPENDABLES NONFISSIONABLE NONJUSTICIABLE NONNEGOTIABLES NONOBSERVANCES NONPERISHABLES NONPOLARISABLE NONRECYCLABLES NONRETURNABLES OBDURATENESSES OBEDIENTIARIES OBJECTIVATIONS OBLIGATORINESS OBSERVABLENESS OBSTREPERATING OLALLIEBERRIES OMBUDSMANSHIPS OPISTHOBRANCHS OPPOSABILITIES ORBICULARITIES ORGANISABILITY ORNITHOPHOBIAS OROBANCHACEOUS OVERABUNDANCES OVERBREATHINGS OVERELABORATES PALAEBIOLOGIES PALAEBIOLOGIST PALAEOBOTANIES PALAEOBOTANIST PALEOBIOLOGIES PALEOBIOLOGIST PALEOBOTANISTS PARABOLISATION PARDONABLENESS PARTICLEBOARDS PATHOBIOLOGIES PENTOBARBITALS PERAMBULATIONS PERSONABLENESS PERTURBATORIES PHENOBARBITALS PHLEBOGRAPHIES PLEBIFICATIONS PNEUMOBACILLUS POLARISABILITY POLYBUTADIENES POLYCARBONATES POLYSYLLABICAL POLYSYLLABISMS POSTLIBERATION PREFABRICATORS PROBABILIORISM PROBABILIORIST PROBATIONARIES PROCESSABILITY PROFITABLENESS PROPAGABLENESS PROTUBERANCIES PROTUBERATIONS PROVABLENESSES PROVEABILITIES PROVERBIALISED PROVERBIALISES PROVERBIALISMS PROVERBIALISTS PROVERBIALIZES PSEUDOMEMBRANE PSYCHOBABBLERS PSYCHOBABBLING QUOTABLENESSES RADIOBIOLOGIES RADIOBIOLOGIST RAMBUNCTIOUSLY RATIONALISABLE REASONABLENESS REATTRIBUTIONS REBROADCASTING RECALIBRATIONS RECOMBINATIONS REDISCOUNTABLE REHABILITATORS RELUBRICATIONS REMOBILISATION REMOVABILITIES REPUBLICATIONS RESOLVABLENESS RESTORABLENESS RETINOBLASTOMA REVERBERATIONS REVOCABILITIES REVOKABILITIES RHABDOMANTISTS RHABDOMYOLYSES RHABDOMYOLYSIS ROLLERBLADINGS ROUNDABOUTNESS SALUBRIOUSNESS SCABROUSNESSES SEASONABLENESS SEMICARBAZONES SHOCKABILITIES SIMAROUBACEOUS SKATEBOARDINGS SNOWBOARDCROSS SOCIABLENESSES SOLUBILISATION SOLUBILIZATION SOLVABLENESSES SOMNAMBULANCES SOMNAMBULATING SOMNAMBULATION SOMNAMBULATORS SOMNAMBULISTIC SORBITISATIONS SORBITIZATIONS SPERMATOBLASTS SPONGIOBLASTIC SPORTABILITIES SPRINGBOARDING STABILISATIONS STABILIZATIONS STOCKBROKERAGE STRABISMOMETER STREPTOBACILLI STROBILISATION STROBILIZATION STROBOSCOPICAL SUBADOLESCENTS SUBAGGREGATION SUBALLOCATIONS SUBALTERNATION SUBARACHNOIDAL SUBARBORESCENT SUBASSOCIATION SUBATMOSPHERIC SUBCATEGORISED SUBCATEGORISES SUBCATEGORIZED SUBCATEGORIZES SUBCONTINENTAL SUBCONTRACTING SUBCONTRACTORS SUBCONTRARIETY SUBCUTANEOUSLY SUBDEACONSHIPS SUBGENERATIONS SUBINDICATIONS SUBINFEUDATION SUBINFEUDATORY SUBINSINUATION SUBIRRIGATIONS SUBNORMALITIES SUBORDINANCIES SUBORDINATIONS SUBPOPULATIONS SUBPROLETARIAT SUBSATURATIONS SUBSIDISATIONS SUBSIDIZATIONS SUBSPONTANEOUS SUBSTANTIATION SUBSTANTIATORS SUBSTITUTIONAL SUBTILISATIONS SUBTILIZATIONS SUPERABOUNDING SUPERABSORBENT SUPERAMBITIOUS SUPERIMPOSABLE SUPPORTABILITY SYLLABICATIONS SYMBIONTICALLY SYMBOLICALNESS SYMBOLISATIONS SYMBOLIZATIONS SYMBOLOLATRIES SYMMETROPHOBIA SYPHILOPHOBIAS TABLESPOONFULS TABLESPOONSFUL TABULARISATION THANATOPHOBIAS THERMOBALANCES THIABENDAZOLES THIOCARBAMIDES THOROUGHBASSES THOROUGHBRACES THROMBOKINASES THROMBOPHILIAS THROMBOPLASTIC THROMBOPLASTIN TINTINNABULOUS TOBACCANALIANS TOLERABILITIES TRANSABDOMINAL TROUBLEMAKINGS TUBERCULATIONS TURBOCHARGINGS UMBRAGEOUSNESS UNCOLLECTABLES UNCONQUERABLES UNCONSCIONABLE UNCONSCIONABLY UNDECOMPOSABLE UNDEMONSTRABLE UNDISCOVERABLE UNDISCOVERABLY UNFASHIONABLES UNKNOWABLENESS UNMENTIONABLES UNQUESTIONABLE UNQUESTIONABLY UNRECOGNISABLE UNRECOGNISABLY UNSOCIABLENESS UNSURMOUNTABLE VAPORABILITIES VASOINHIBITORS VASOINHIBITORY VERBALISATIONS VERBALIZATIONS VERBIFICATIONS VERBIGERATIONS VIOLABLENESSES VOIDABLENESSES WATERBOARDINGS WEBLIOGRAPHIES WHATABOUTERIES WORKABLENESSES ZINGIBERACEOUS ZINZIBERACEOUS ZOMBIFICATIONS