There are 447 thirteen-letter words containing A, B, C and S, https://www.bestwordlist.com/c/a/4/13letterwordswithabcs.htm ABSTRACTIONAL ABSTRACTIVELY ABYSSOPELAGIC ACCESSIBILITY AICHMOPHOBIAS ALEMBICATIONS AMBIVALENCIES AMICABILITIES ANALPHABETICS ANGLOPHOBIACS ANTIBALLISTIC ANTIBLACKISMS ANTIDIABETICS ANTIOBSCENITY ANTISCORBUTIC ARABICISATION ARACHNOPHOBES ARBITRATRICES ARBORESCENCES ARCHBISHOPRIC ASCERTAINABLE ASCERTAINABLY ASSEMBLAUNCES ASSOCIABILITY BACCHANALIANS BACHELORETTES BACHELORHOODS BACHELORSHIPS BACKCOUNTRIES BACKFLIPPINGS BACKGROUNDERS BACKSCATTERED BACKSCRATCHED BACKSCRATCHER BACKSCRATCHES BACKSHEESHING BACKSLAPPINGS BACKSTABBINGS BACKSTARTINGS BACKSTITCHING BACKSTRAIGHTS BACKSTRETCHES BACKSWORDSMAN BACKSWORDSMEN BACKTRACKINGS BACKWOODSIEST BACTERIOCIDES BACTERIOLYSES BACTERIOLYSIN BACTERIOLYSIS BACTERIOSTATS BACTERISATION BACULOVIRUSES BALDERLOCKSES BALLISTICALLY BANCASSURANCE BAREFACEDNESS BARORECEPTORS BASIDIOMYCETE BASIFICATIONS BEACHCOMBINGS BEHAVIORISTIC BENCHMARKINGS BENEFICIARIES BETACAROTENES BIBLIOMANCIES BIBLIOMANIACS BICAMERALISMS BICAMERALISTS BICENTENARIES BICENTENNIALS BICONCAVITIES BICULTURALISM BIGNONIACEOUS BIMETALLISTIC BIOACTIVITIES BIOMETRICIANS BIOPESTICIDAL BIOPHYSICALLY BIOSTATICALLY BIOSTATISTICS BIOSYSTEMATIC BIRDWATCHINGS BISECTIONALLY BISYMMETRICAL BLACKBALLINGS BLACKBIRDINGS BLACKCURRANTS BLACKGUARDISM BLACKLISTINGS BLACKSMITHING BLADDERWRACKS BLANCHISSEUSE BLASTOGENETIC BLASTOMYCOSES BLASTOMYCOSIS BODYSNATCHERS BOMBASTICALLY BONNYCLABBERS BORAGINACEOUS BOROSILICATES BOTANOMANCIES BRACHIOSAURUS BRACHYCEPHALS BRACHYPTERISM BRACHYPTEROUS BRAGGADOCIOUS BRAINSICKNESS BRASSICACEOUS BREAKDANCINGS BREECHLOADERS BROADCASTINGS BROMELIACEOUS BRONCHOSPASMS BUCCANEERINGS BUREAUCRACIES BUREAUCRATESE BUREAUCRATISE BUREAUCRATISM BUREAUCRATIST BUSHWHACKINGS CABBALISTICAL CABINETMAKERS CACKLEBERRIES CANCERPHOBIAS CANDLEBERRIES CANNIBALISING CANNIBALISTIC CAPABLENESSES CARBOHYDRASES CARBOHYDRATES CARBONIFEROUS CARBONISATION CARBURISATION CARDBOARDIEST CARPETBAGGERS CASTABILITIES CAUSABILITIES CELIBATARIANS CENSURABILITY CEREBROSPINAL CEREBROTONIAS CHECKERBOARDS CHEQUERBOARDS CHICKABIDDIES CHILDBEARINGS CHIMNEYBOARDS CHIMNEYBREAST CHLORAMBUCILS CHONDROBLASTS CIRCUMAMBAGES CLAPPERBOARDS CLAUSTROPHOBE CLAVICEMBALOS CLEAVABLENESS CLUBABILITIES COACHBUILDERS COBALTIFEROUS COCARBOXYLASE COHABITATIONS COILABILITIES COLLABORATORS COLORABLENESS COMBATIVENESS COMBINATORICS COMMEASURABLE COMMENSURABLE COMMENSURABLY CONCELEBRANTS CONCELEBRATES CONCUBINARIES CONFABULATORS CONFISCATABLE CONFUSABILITY CONGLOBATIONS CONGLOBULATES CONNUBIALISMS CONSIDERABLES CONSTABLESHIP CONSTABLEWICK CONSTRAINABLE CONSTRUCTABLE CONTABESCENCE CONTRABANDISM CONTRABANDIST CONTRABASSIST CONTRABASSOON CONTRABBASSOS CORROBORATORS COUNTERBLASTS COUNTERBRACES CRABBEDNESSES CRISTOBALITES CROSSBANDINGS CROSSBARRINGS CRYSTALISABLE CRYSTALIZABLE CUBICALNESSES CULPABILITIES CURABLENESSES CYBERATHLETES CYBERSQUATTER CYBERSTALKERS CYBERSTALKING CYTOMEMBRANES DAUNORUBICINS DEBAUCHEDNESS DECARBONATORS DECARBONISERS DECARBONISING DECARBONIZERS DECARBOXYLASE DECARBURISING DECASYLLABICS DECASYLLABLES DESPICABILITY DIBRANCHIATES DISCHARGEABLE DISCIPLINABLE DISCREDITABLE DISCREDITABLY DISCRIMINABLE DISCRIMINABLY DISSEMBLANCES EDUCABILITIES ELASMOBRANCHS ELUCUBRATIONS EMBRACINGNESS EMBRANCHMENTS ENCUMBRANCERS EXACERBATIONS EXCITABLENESS EXCUSABLENESS EXECRABLENESS EXORBITANCIES FEBRIFACIENTS FIBROSARCOMAS FIBROVASCULAR FLAMBOYANCIES FLUOROCARBONS FRANCOPHOBIAS GREENBACKISMS HARDSCRABBLES HEBEPHRENIACS HEMATOBLASTIC HEPTASYLLABIC HETEROBLASTIC HUBRISTICALLY IMMARCESCIBLE INABSTINENCES INCAPABLENESS INCOMPATIBLES INCONDENSABLE INCONSTRUABLE INCONTESTABLE INCONTESTABLY INCONVERSABLE INCUMBRANCERS INCUNABULISTS INCURABLENESS INDESCRIBABLE INDESCRIBABLY INDISSOCIABLE INDISSOCIABLY INHABITANCIES INOBSERVANCES INSOCIABILITY INTERBRANCHES IRASCIBLENESS ISOBAROMETRIC ISOCARBOXAZID JABBERWOCKIES LACTOBACILLUS LUMBERJACKETS LUMBRICALISES LYMPHOBLASTIC MARSIPOBRANCH MEGALOBLASTIC MEMBRANACEOUS MICROBALANCES MICROHABITATS MISOBSERVANCE MISTRANSCRIBE MULTISYLLABIC NOCTAMBULISMS NOCTAMBULISTS NONBROADCASTS NONCOMBATANTS NONOBSERVANCE OBSCURANTISMS OBSCURANTISTS OBSTETRICALLY OBSTETRICIANS OBSTRUCTIONAL OCHLOPHOBIACS OCTOSYLLABICS OCTOSYLLABLES ODONTOBLASTIC OPISTHOBRANCH PACKABILITIES PARASYMBIOTIC PEACEABLENESS PECCABILITIES PENTASYLLABIC PLACABILITIES PREFABRICATES PRESBYACOUSES PRESBYACOUSIS PROBABILISTIC PROBOSCIDEANS PROBOSCIDIANS PROCARBAZINES PROTUBERANCES PSYCHOBABBLED PSYCHOBABBLER PSYCHOBABBLES REBROADCASTED RECOMPENSABLE REMEMBRANCERS REPUBLICANISE REPUBLICANISM RESECTABILITY REVOCABLENESS RHABDOMANCERS RHABDOMANCIES RIBONUCLEASES SACRIFICEABLE SCABBEDNESSES SCALABILITIES SCATTERBRAINS SCHLUMBERGERA SCOPTOPHOBIAS SCORBUTICALLY SCRAPBOOKINGS SCRAPERBOARDS SCRATCHBOARDS SCRATCHBUILDS SCRIEVEBOARDS SCROBICULATED SEARCHABILITY SECOBARBITALS SEMIABSTRACTS SEMICARBAZIDE SEMICARBAZONE SHAMBOLICALLY SIMARUBACEOUS SKETCHABILITY SNOBBOCRACIES SOCIABILITIES SOMNAMBULANCE SORBEFACIENTS STICKYBEAKING STROBILACEOUS SUBACIDNESSES SUBADOLESCENT SUBALLOCATING SUBALLOCATION SUBAPPEARANCE SUBARACHNOIDS SUBARCUATIONS SUBCATEGORIES SUBCATEGORISE SUBCATEGORIZE SUBCELESTIALS SUBCHARTERING SUBCLASSIFIED SUBCLASSIFIES SUBCLAVICULAR SUBCLINICALLY SUBCOLLEGIATE SUBCONTRACTED SUBCONTRACTOR SUBCONTRARIES SUBCORIACEOUS SUBCULTURALLY SUBDEACONATES SUBDEACONRIES SUBDEACONSHIP SUBDIACONATES SUBFACTORIALS SUBINDICATING SUBINDICATION SUBINDICATIVE SUBLANCEOLATE SUBLITERACIES SUBPRINCIPALS SUBSPECIALISE SUBSPECIALIST SUBSPECIALITY SUBSPECIALIZE SUBSTANCELESS SUBSTRACTIONS SUBSTRUCTURAL SUBTRIPLICATE SUBTROPICALLY SUBURBICARIAN SUBVOCALISING SUBVOCALIZING SUPERCABINETS SWASHBUCKLERS SWASHBUCKLING SWITCHBACKING SYBARITICALLY SYLLABICATING SYLLABICATION SYLLABICITIES SYMBIOTICALLY SYMBOLISTICAL TAUTOSYLLABIC TEACHABLENESS TECHNOBABBLES TECHNOPHOBIAS TETRABASICITY TETRASYLLABIC TIMBROMANIACS TOUCHABLENESS TOXICOPHOBIAS TRACEABLENESS TRACTABLENESS TRANSCRIBABLE TRIPLOBLASTIC TRISYLLABICAL TROPHOBLASTIC TUBOCURARINES TURBOCHARGERS UMBILICATIONS UNCHASTISABLE UNCHASTIZABLE UNCONTESTABLE UNCONVERSABLE UNDESCENDABLE UNDESCRIBABLE UNDISCUSSABLE UNOBSERVANCES UNPURCHASABLE UNRECYCLABLES UNRESPECTABLE UNSCABBARDING UNSEARCHABLES UNSERVICEABLE UNSERVICEABLY UNSOCIABILITY UNSPECIFIABLE UNSTAUNCHABLE VIBRATIUNCLES VOCABULARIANS VRAISEMBLANCE