There are 669 thirteen-letter words containing A, C, D and R, https://www.bestwordlist.com/c/a/4/13letterwordswithacdr.htm
ACARIDOMATIUM ACARODOMATIUM ACCOMMODATORS ACCORDIONISTS ACCREDITATION
ACHLORHYDRIAS ACIDIMETRICAL ACKNOWLEDGERS ADIAPHORISTIC ADIATHERMANCY
ADRENALECTOMY ADRENOCEPTORS ADRENOCHROMES ADULARESCENCE ADVENTURISTIC
AECIDIOSPORES AERODYNAMICAL AEROMEDICINES AMINOACIDURIA ANAPHRODISIAC
ANDROCENTRISM ANDRODIOECISM ANTIDIURETICS ANTIPERIODICS APERIODICALLY
APHRODISIACAL ARACHNOIDITIS ARCHDUCHESSES ARCHIDIACONAL ARCHIMANDRITE
ARUNDINACEOUS ASTRODYNAMICS AUTOCORRECTED AUTODESTRUCTS BACHELORHOODS
BACKGROUNDERS BACKGROUNDING BACKSCATTERED BACKSCRATCHED BACKSWORDSMAN
BACKSWORDSMEN BACKWARDATION BACTERIOCIDAL BACTERIOCIDES BALDERLOCKSES
BAREFACEDNESS BIDIRECTIONAL BIRDWATCHINGS BLACKBIRDINGS BLACKGUARDING
BLACKGUARDISM BLADDERWRACKS BODYSNATCHERS BRACHYDACTYLY BRAGGADOCIOUS
BRAINCHILDREN BREADCRUMBING BREAKDANCINGS BREECHLOADERS BROADCASTINGS
CACKERMANDERS CALENDARISING CALENDARIZING CANDLEBERRIES CANDLEHOLDERS
CANDLELIGHTER CANDLESNUFFER CARBOHYDRASES CARBOHYDRATES CARCINOMATOID
CARDBOARDIEST CARDINALATIAL CARDINALITIAL CARDINALITIES CARDINALSHIPS
CARDIOGRAPHER CARDIOGRAPHIC CARDIOLOGICAL CARDIOLOGISTS CARDIOPATHIES
CARDIOPLEGIAS CARDIOVERSION CARDIOVERTERS CARDSHARPINGS CARRYFORWARDS
CATERCORNERED CATHIODERMIES CATHODOGRAPHS CATHODOGRAPHY CEPHALORIDINE
CHANGEAROUNDS CHARACTERISED CHARACTERIZED CHATEAUBRIAND CHECKERBOARDS
CHEQUERBOARDS CHILDBEARINGS CHILDRENSWEAR CHILIAHEDRONS CHIMNEYBOARDS
CHLAMYDOSPORE CHONDRIOSOMAL CHONDROBLASTS CHONDROCRANIA CHONDROMATOUS
CHONDROSAMINE CHONDROSTIANS CHOREOGRAPHED CHOWDERHEADED CHURCHWARDENS
CIRCUMGYRATED CIRCUMNUTATED CIRCUMROTATED CIRCUMSTANCED CLAIRAUDIENCE
CLAIRAUDIENTS CLAPPERBOARDS CLAPPERCLAWED CLAVICHORDIST CLEARHEADEDLY
COACHBUILDERS COADJUTORSHIP COADJUTRESSES COADMINISTERS COASTGUARDMAN
COASTGUARDMEN COLDHEARTEDLY COMMANDEERING COMMANDERSHIP COMPARTMENTED
COMRADELINESS CONCELEBRATED CONCORPORATED CONFEDERACIES CONFEDERATING
CONFEDERATION CONFEDERATIVE CONGLOMERATED CONGRATULATED CONQUISTADORS
CONSERVATISED CONSERVATIZED CONSIDERABLES CONSIDERANCES CONSIDERATELY
CONSIDERATION CONSIDERATIVE CONSOLIDATORS CONSTRAINEDLY CONTAINERISED
CONTAINERIZED CONTRABANDISM CONTRABANDIST CONTRADICTERS CONTRADICTING
CONTRADICTION CONTRADICTIVE CONTRADICTORS CONTRADICTORY CONTRITURATED
COORDINATIONS CORDIALNESSES CORDWAINERIES CORESIDENTIAL CORPOREALISED
CORPOREALIZED COSTARDMONGER COTRANSDUCING COTRANSFERRED COTRANSPORTED
COUNTERARGUED COUNTERBRACED COUNTERDEMAND COUNTERMANDED COUNTERPLAYED
COUNTERPLEADS COUNTERRAIDED COUNTERSEALED COUNTERSTATED COUNTERTRADED
COUNTERTRADES COUNTERVAILED CRABBEDNESSES CRAGGEDNESSES CREATUREHOODS
CREDENTIALING CREDENTIALISM CREDENTIALLED CREDITABILITY CROSSBANDINGS
CRYSTALLOIDAL CYBERCHONDRIA CYLINDRACEOUS CYLINDRICALLY DACTYLOGRAPHY
DAUNORUBICINS DEARTICULATED DEARTICULATES DECARBONATING DECARBONATION
DECARBONATORS DECARBONISERS DECARBONISING DECARBONIZERS DECARBONIZING
DECARBOXYLASE DECARBOXYLATE DECARBURATION DECARBURISING DECARBURIZING
DECARTELISING DECARTELIZING DECELERATIONS DECENTRALISED DECENTRALISES
DECENTRALISTS DECENTRALIZED DECENTRALIZES DECEREBRATING DECEREBRATION
DECHLORINATED DECHLORINATES DECLAMATORILY DECLARATIVELY DECLARATORILY
DECLINATORIES DECOLORATIONS DECONCENTRATE DECONSECRATED DECONSECRATES
DECORTICATING DECORTICATION DECORTICATORS DECRASSIFYING DECREPITATING
DECREPITATION DECRIMINALISE DECRIMINALIZE DECRUSTATIONS DEFORCIATIONS
DELIRIFACIENT DEMIURGICALLY DEMOCRATISERS DEMOCRATISING DEMOCRATIZERS
DEMOCRATIZING DEMOGRAPHICAL DEMONOCRACIES DENDRITICALLY DENDROLOGICAL
DENUCLEARISED DENUCLEARISES DENUCLEARIZED DENUCLEARIZES DEPRECATINGLY
DEPRECATIVELY DEPRECATORILY DEPRECIATIONS DERACIALISING DERACIALIZING
DERACINATIONS DERMATOPHYTIC DESACRALISING DESACRALIZING DESTRUCTIONAL
DETERMINACIES DETRACTRESSES DETRUNCATIONS DEXTROCARDIAC DEXTROCARDIAS
DIACHRONISTIC DIACRITICALLY DIAMETRICALLY DIAPHRAGMATIC DIATHERMACIES
DIBRANCHIATES DICHLORACETIC DICHROMATISMS DICTATORIALLY DICTATORSHIPS
DICTYOPTERANS DIFFRACTIVELY DIGRAPHICALLY DILACERATIONS DIORISTICALLY
DIRECTORIALLY DISACCHARIDES DISACCREDITED DISAFFIRMANCE DISAPPEARANCE
DISARTICULATE DISCANDERINGS DISCHARGEABLE DISCOGRAPHERS DISCOGRAPHIES
DISCOLORATION DISCORDANCIES DISCORPORATED DISCORPORATES DISCREDITABLE
DISCREDITABLY DISCREPANCIES DISCRETIONARY DISCRIMINABLE DISCRIMINABLY
DISCRIMINANTS DISCRIMINATED DISCRIMINATES DISCRIMINATOR DISENCHANTERS
DISENTRANCING DISFRANCHISED DISFRANCHISES DISGRACEFULLY DISINTRICATED
DISINTRICATES DISPURVEYANCE DISSEVERANCES DISTRACTINGLY DISTRACTIVELY
DIVARICATIONS DIVERTICULATE DOCKWALLOPERS DOCTRINAIRISM DOCTRINARIANS
DOCTRINARISMS DOCUMENTARIAN DOCUMENTARIES DOCUMENTARILY DOCUMENTARISE
DOCUMENTARIST DOCUMENTARIZE DODECAHEDRONS DOLICHOSAURUS DOMESTICATORS
DOSIMETRICIAN DRACONIANISMS DRACUNCULUSES DRAMATURGICAL EDULCORATIONS
ELECTRODERMAL ELECTROPLATED ENANTIODROMIC ENCHONDROMATA ENDOPARASITIC
ENTERCHAUNGED EUDIOMETRICAL EXTRAJUDICIAL FERRICYANIDES FERROCYANIDES
FLUIDEXTRACTS FRAUDULENCIES GILLRAVITCHED GLUCURONIDASE GONADOTROPHIC
GRAMMATICISED GRAMMATICIZED GRANDCHILDREN GRANODIORITIC HANDCRAFTSMAN
HANDCRAFTSMEN HANDICRAFTERS HANDKERCHIEFS HARDSCRABBLES HARMONICHORDS
HEMICHORDATES HENCEFORWARDS HENDECAHEDRON HETERODACTYLS HEXACHLORIDES
HYDNOCARPATES HYDRAULICALLY HYDRAULICKING HYDROCEPHALIC HYDROCEPHALUS
HYDROCRACKERS HYDROCRACKING HYDRODYNAMICS HYDROMAGNETIC HYDROMETRICAL
HYDROPATHICAL HYDROSCOPICAL HYDROSTATICAL HYDROTHERAPIC HYDROTHORACES
HYDROTHORACIC HYDROXYACETIC HYPOCHONDRIAC HYPOCHONDRIAS IDEOGRAMMATIC
IDEOGRAPHICAL IDIOSYNCRATIC IMPREDICATIVE INADVERTENCES INCARDINATING
INCARDINATION INCARNADINING INCENDIARISMS INCONSIDERATE INDESCRIBABLE
INDESCRIBABLY INDETERMINACY INDOCTRINATED INDOCTRINATES INDOCTRINATOR
INTERCOMPARED INTERPANDEMIC ISOCARBOXAZID MACHAIRODONTS MACRODACTYLIC
MACRODIAGONAL MACROPINACOID MACROPINAKOID MATCHBOARDING MEDICAMENTARY
MEGALOCARDIAS MELODRAMATICS MERCHANDISERS MERCHANDISING MERCHANDIZERS
MERCHANDIZING MERCURIALISED MERCURIALIZED MISADVERTENCE MITOCHONDRIAL
MUCKSPREADERS MUCKSPREADING MULTIBRANCHED MYOCARDITISES NEUROFEEDBACK
NONACCREDITED NONBROADCASTS NONDECREASING NONDEMOCRATIC NONINTERLACED
NORADRENERGIC ORCHIDOMANIAC ORCHIDOMANIAS ORTHOPAEDICAL OUTRECUIDANCE
OVERABUNDANCE OVERDECORATED OVERDECORATES OVERDOMINANCE OVERDRAMATICS
OVEREDUCATING OVEREDUCATION OVERMEDICATED OVERMEDICATES PAEDIATRICIAN
PALINDROMICAL PARADOXICALLY PARASCENDINGS PARASITICIDAL PARASITICIDES
PARCHEDNESSES PARCHMENTISED PARCHMENTIZED PAROCHIALISED PAROCHIALIZED
PARTICLEBOARD PARTICOLOURED PEDANTOCRATIC PEDIATRICIANS PEDICELLARIAE
PENTACRINOIDS PERICHONDRIAL PERIODICALIST PERISSODACTYL PERPENDICULAR
PICTORIALISED PICTORIALIZED PORCELAINISED PORCELAINIZED PORCELLANISED
PORCELLANIZED POSTDOCTORALS POSTDOCTORATE POSTSECONDARY PREACQUAINTED
PREADOLESCENT PRECONTRACTED PREDICABILITY PREDICAMENTAL PREDICATIVELY
PREDOMINANCES PREFABRICATED PREJUDICATING PREJUDICATION PREJUDICATIVE
PREJUDICIALLY PREMEDICATING PREMEDICATION PREORDINANCES PREPONDERANCE
PREPONDERANCY PRESANCTIFIED PRIVATDOCENTS PROBOSCIDEANS PROBOSCIDIANS
PROCATHEDRALS PROPAEDEUTICS PROTOCHORDATE PSEUDOCARPOUS PSEUDOSCALARS
PTERODACTYLES PYRAMIDICALLY QUADRAPHONICS QUADRAPLEGICS QUADRATICALLY
QUADRICIPITAL QUADRILOCULAR QUADRIPHONICS QUADRIPLEGICS QUADRISECTING
QUADRISECTION QUADRIVALENCE QUADRIVALENCY QUADROPHONICS QUADRUPLICATE
QUADRUPLICITY QUARTERBACKED QUARTERDECKER QUARTODECIMAN QUASIPERIODIC
RADICALNESSES RADICULOPATHY RADIOACTIVATE RADIOACTIVELY RADIOACTIVITY
RADIOBIOLOGIC RADIOCHEMICAL RADIOCHEMISTS RADIOISOTOPIC RADIOLOCATION
RADIONUCLIDES RADIOPACITIES REACCELERATED REACCREDITING READMITTANCES
REARTICULATED REBROADCASTED RECALCITRATED RECAPITALISED RECAPITALIZED
RECAPITULATED RECATEGORIZED RECENTRALIZED RECOMMENDABLE RECOMMENDABLY
RECONSECRATED RECONSOLIDATE RECONVALESCED REDECORATIONS REDEDICATIONS
REDELIVERANCE REDUPLICATING REDUPLICATION REDUPLICATIVE RELANDSCAPING
REVENDICATING REVENDICATION REVINDICATING REVINDICATION RHABDOMANCERS
RHABDOMANCIES RHAPSODICALLY SACERDOTALISE SACERDOTALISM SACERDOTALIST
SACERDOTALIZE SCALENOHEDRON SCANDALMONGER SCHADENFREUDE SCLERODERMATA
SCLERODERMIAS SCRAPERBOARDS SCRATCHBOARDS SCRATCHBUILDS SCRIEVEBOARDS
SCRIMSHANDERS SCRIMSHANDIED SCRIMSHANDIES SCROBICULATED SECONDARINESS
SECTARIANISED SECTARIANIZED SEMICARBAZIDE SLOCKDOLAGERS SOUNDTRACKING
SPADICIFLORAL SPERMATOCIDAL SPERMATOCIDES STICKHANDLERS STRAIGHTLACED
STRAITLACEDLY SUBARACHNOIDS SUBCONTRACTED SUBDEACONRIES SUPERCALENDER
TETRACHLORIDE TETRADRACHMAS TETRADRACHMON THENCEFORWARD THERMODYNAMIC
THIOCARBAMIDE THOROUGHPACED TRADESCANTIAS TRADUCIANISMS TRADUCIANISTS
TRAGICOMEDIES TRANSACTINIDE TRANSCENDENCE TRANSCENDENCY TRANSCENDENTS
TRANSDUCTANTS TRANSDUCTIONS TRANSLUCIDITY TRICHOMONADAL TRICORPORATED
TRISACCHARIDE TRISOCTAHEDRA TROGLODYTICAL TURACOVERDINS ULTRADISTANCE
ULTRARADICALS UNAPPRECIATED UNARTICULATED UNASCERTAINED UNBARRICADING
UNCHLORINATED UNCHRISTIANED UNCONSECRATED UNCONSTRAINED UNCOORDINATED
UNCREATEDNESS UNDEPRECIATED UNDERACHIEVED UNDERACHIEVER UNDERACHIEVES
UNDERACTIVITY UNDERCARRIAGE UNDERCHARGING UNDERCLASSMAN UNDERCLASSMEN
UNDERCOATINGS UNDERCRACKERS UNDEREDUCATED UNDERFINANCED UNDERREACTING
UNDERREACTION UNDERSURFACES UNDESCRIBABLE UNDISCOURAGED UNDISTRACTING
UNDOCTRINAIRE UNPREDICTABLE UNPREDICTABLY UNSCABBARDING UNSCAVENGERED
UNSTERCORATED VALEDICTORIAN VALEDICTORIES VERTICILLATED VINDICATORILY
WEATHERCOCKED WOODCRAFTSMAN WOODCRAFTSMEN XANTHOCHROIDS