There are 444 thirteen-letter words containing 2A, R, T and U, https://www.bestwordlist.com/c/a/5/13letterwordswithaartu.htm ABBREVIATURES ACARIDOMATIUM ACARODOMATIUM ACCIACCATURAS ACCULTURATING ACCULTURATION ACCULTURATIVE ACQUIRABILITY ACTINOURANIUM ADMEASUREMENT ADULTERATIONS ADUMBRATIVELY AEROACOUSTICS AGRANULOCYTES AMARANTACEOUS AMPHIGASTRIUM ANFRACTUOSITY ANTHRAQUINONE ANTIAUTHORITY ANTIGUERRILLA ANTIMARIJUANA ANTIQUITARIAN ANTIRHEUMATIC ANTIRITUALISM ANTISUBMARINE APATOSAURUSES APHANIPTEROUS APPOGGIATURAS APPROPINQUATE APPURTENANCES AQUACULTURIST ARCHITECTURAL ARGUMENTATION ARGUMENTATIVE ARMAMENTARIUM ARTICULATIONS ASTRONAUTICAL ATTRIBUTIONAL AUREATENESSES AUTHENTICATOR AUTHORISATION AUTHORITARIAN AUTHORITATIVE AUTHORIZATION AUTOBIOGRAPHY AUTOGRAPHICAL AUTORADIOGRAM AUTORICKSHAWS AUTOROTATIONS AVERRUNCATING AVERRUNCATION AVERRUNCATORS BACCALAUREATE BLACKCURRANTS BRUTALISATION BRUTALIZATION BUREAUCRATESE BUREAUCRATISE BUREAUCRATISM BUREAUCRATIST BUREAUCRATIZE CARBURISATION CARBURIZATION CARCINOMATOUS CARICATURISTS CARTILAGINOUS CATERWAULINGS CAUTERISATION CAUTERIZATION CHATEAUBRIAND CIRCUMVALLATE CLAIRAUDIENTS CLAUSTRATIONS COASTGUARDMAN COASTGUARDMEN COMMUNAUTAIRE COMMUNITARIAN CONFABULATORS CONFABULATORY CONGRATULABLE CONGRATULANTS CONGRATULATED CONGRATULATES CONGRATULATOR CONNATURALISE CONNATURALITY CONNATURALIZE CONTRACTUALLY CONTRASEXUALS COSURFACTANTS COUNTERATTACK CURARISATIONS CURARIZATIONS DARMSTADTIUMS DAUGHTERBOARD DEARTICULATED DEARTICULATES DECARBURATION DEFRAUDATIONS DEGRANULATION DENATURALISED DENATURALISES DENATURALIZED DENATURALIZES DENATURATIONS DEPAUPERATING DESATURATIONS DEUTERANOMALY DEUTERANOPIAS DIATHERMANOUS DISARTICULATE DISNATURALISE DISNATURALIZE DOCUMENTARIAN DRAMATURGICAL DRAMATURGISTS DRAUGHTBOARDS DRAUGHTSWOMAN EQUALITARIANS EQUILATERALLY EQUIPARATIONS EUSPORANGIATE EXPURGATORIAL EXTRACELLULAR EXTRAJUDICIAL EXTRAVASCULAR FLUNITRAZEPAM FLUORAPATITES FLUOROACETATE FOUNDATIONARY FRACTOSTRATUS FRUITARIANISM FUNAMBULATORS FUNAMBULATORY FUTILITARIANS GASTRULATIONS GRADUATESHIPS GRANDDAUGHTER GRANULARITIES GRANULOMATOUS GRATICULATION GUBERNATORIAL HALLUCINATORS HALLUCINATORY HARUSPICATING HARUSPICATION HEADQUARTERED HERPETOFAUNAE HERPETOFAUNAS HUMANITARIANS ILLUSTRATABLE INARTICULATES INAUGURATIONS INHALATORIUMS INSTAURATIONS INTERGRANULAR INTERJACULATE INTERSCAPULAR INTRACAPSULAR INTRACELLULAR INTRAMUSCULAR INTRAOCULARLY INTRAVASCULAR KATHAREVOUSAS LAUREATESHIPS LUBRICATIONAL MACROMUTATION MAGISTRATURES MANSLAUGHTERS MANUFACTORIES MANUFACTURERS MANUFACTURING MASTURBATIONS MATRICULATING MATRICULATION MATRICULATORS MATRICULATORY MEASURABILITY MENSURATIONAL METALLURGICAL MISARTICULATE MISCALCULATOR MONOSATURATED MOUNTAINBOARD MULTICAMERATE MULTIGRAVIDAE MULTIGRAVIDAS MULTIRACIALLY MULTISTANDARD MULTIVARIABLE MULTIWARHEADS MUTESSARIFATS NATURALNESSES NATUROPATHIES NEURASTHENIAC NEURASTHENIAS NEUROANATOMIC NEUROBLASTOMA NEUROPATHICAL NOMENCLATURAL NOMENKLATURAS NUTRACEUTICAL ORACULARITIES OUTBARGAINING OVEREVALUATED OVEREVALUATES OVERSATURATED OVERSATURATES OVERVALUATION PALAEOCURRENT PARAMENSTRUUM PARAMOUNTCIES PARAQUADRATES PARASEXUALITY PARTICULARISE PARTICULARISM PARTICULARIST PARTICULARITY PARTICULARIZE PAUPERISATION PAUPERIZATION PERAMBULATING PERAMBULATION PERAMBULATORS PERAMBULATORY PERMUTATIONAL PHARMACEUTICS PHARMACEUTIST PHONAUTOGRAPH PHOSPHATURIAS PIACULARITIES PLURALISATION PLURALIZATION PLUTOCRATICAL POSTGRADUATES POSTINAUGURAL POSTTRAUMATIC PREACQUAINTED PREAMBULATING PREAMBULATORY PRECAUTIONARY PRETERNATURAL PROCURATORIAL PROTANOMALOUS PROTOLANGUAGE PTEROSAURIANS PURGATORIALLY PURITANICALLY QUADRATICALLY QUADRICIPITAL QUADRIFOLIATE QUADRILATERAL QUADRILITERAL QUADRIPARTITE QUADRIVALENTS QUADRUMVIRATE QUADRUPLICATE QUALIFICATORS QUALIFICATORY QUARRYMASTERS QUARTERBACKED QUARTERFINALS QUARTERMASTER QUARTERSAWING QUARTERSTAFFS QUARTERSTAVES QUARTODECIMAN QUASICRYSTALS QUASIPARTICLE RADICULOPATHY REACQUAINTING REARTICULATED REARTICULATES RECALCULATING RECALCULATION RECAPITULATED RECAPITULATES RECATALOGUING RECTANGULARLY REEVALUATIONS REMANUFACTURE RENATURATIONS RESTAURANTEUR RESTAURATEURS RESTAURATIONS RHEUMATICALLY RITUALISATION RITUALIZATION RURALISATIONS RURALIZATIONS SALUTATORIANS SANCTUARISING SANCTUARIZING SARMENTACEOUS SATURNALIANLY SAUROGNATHOUS SESQUIALTERAS SHAMATEURISMS SLAUGHTERABLE SOMATOPLEURAL SOMNAMBULATOR SOUTHEASTWARD SPECTACULARLY STEGOSAURIANS STRANGULATING STRANGULATION SUBAGGREGATES SUBALTERNANTS SUBALTERNATES SUBARCUATIONS SUBARRHATIONS SUBEQUATORIAL SUBFACTORIALS SUBSATURATION SUBSIDIARIATS SUBSTANTIATOR SUBTERNATURAL SUBTERRANEANS SUBTRIANGULAR SUMMARISATION SUMMARIZATION SUOVETAURILIA SUPERABUNDANT SUPERACCURATE SUPERANNUATED SUPERANNUATES SUPERNATATION SUPERNATIONAL SUPERNATURALS SUPERSATURATE SUPRANATIONAL SUPRARATIONAL SUPRATEMPORAL SUSTENTACULAR TAUTOMETRICAL TELAUTOGRAPHY TELEOSAURIANS TETRADYNAMOUS THAUMATOLATRY THAUMATURGICS THAUMATURGIES THAUMATURGISM THAUMATURGIST THERAPEUTICAL TINTINNABULAR TRADUCIANISMS TRADUCIANISTS TRANSCULTURAL TRANSDUCTANTS TRANSEXUALISM TRANSEXUALITY TRANSFUSIONAL TRANSHUMANCES TRANSMOUNTAIN TRANSMUTATION TRANSMUTATIVE TRANSUDATIONS TRANSURETHRAL TRANSVALUATED TRANSVALUATES TRAUMATICALLY TRAUMATONASTY TRIANGULARITY TRIANGULATELY TRIANGULATING TRIANGULATION TRUSTAFARIANS TUBERCULOMATA TURANGAWAEWAE TURBELLARIANS TYRANNOSAURID TYRANNOSAURUS UBIQUITARIANS ULTRACAUTIOUS ULTRACRITICAL ULTRADISTANCE ULTRAFAMILIAR ULTRAFILTRATE ULTRAHEAVIEST ULTRALIBERALS ULTRAMARATHON ULTRAMILITANT ULTRAMONTANES ULTRANATIONAL ULTRAPHYSICAL ULTRARADICALS ULTRARAREFIED ULTRARATIONAL ULTRAREALISMS ULTRAREALISTS ULTRARELIABLE ULTRAROMANTIC ULTRAROYALIST ULTRAWIDEBAND UNABBREVIATED UNADULTERATED UNAPPRECIATED UNAPPROPRIATE UNARTICULATED UNASCERTAINED UNCHARISMATIC UNDERGRADUATE UNEXAGGERATED UNFAMILIARITY UNGRAMMATICAL UNICAMERALIST UNILATERALISM UNILATERALIST UNILATERALITY UNINAUGURATED UNIPARENTALLY UNITARIANISMS UNNATURALISED UNNATURALISES UNNATURALIZED UNNATURALIZES UNNATURALNESS UNPARASITISED UNPARASITIZED UNPRACTICABLE UNPRACTICALLY UNREADABILITY UNSATURATIONS UNSPECTACULAR UNTRADITIONAL UNTRANSPARENT UNTRAVERSABLE UNWARRANTABLE UNWARRANTABLY UNWARRANTEDLY UPGRADABILITY URALITISATION URALITIZATION URANOGRAPHIST URANOPLASTIES URBANISATIONS URBANIZATIONS VAPOURABILITY VASCULARITIES VERNACULARIST VERNACULARITY VILLEGGIATURA VULGARISATION VULGARIZATION