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