There are 406 fourteen-letter words containing 2A, R, T and U, https://www.bestwordlist.com/c/a/5/14letterwordswithaartu.htm
ACCULTURATIONS ACCURATENESSES ACTINOURANIUMS ADIATHERMANOUS ADMEASUREMENTS
AERENCHYMATOUS AERONAUTICALLY AGRICULTURALLY AGROINDUSTRIAL ALTITUDINARIAN
ALTRUISTICALLY AMARANTHACEOUS AMATEURISHNESS ANARTHROUSNESS ANTHRAQUINONES
ANTHROPOPHAGUS ANTIBARBARUSES ANTIGUERRILLAS ANTINUCLEARIST ANTIQUARIANISM
ANTIQUITARIANS ANTIREGULATORY ANTIREPUBLICAN ANTIRHEUMATICS ANTIRITUALISMS
ANTISCRIPTURAL ANTITUBERCULAR APPROPINQUATED APPROPINQUATES AQUACULTURISTS
ARBORICULTURAL ARGUMENTATIONS ARMAMENTARIUMS ARTICULATENESS ARTIODACTYLOUS
ATTITUDINARIAN AUDIOMETRICIAN AUTHENTICATORS AUTHORISATIONS AUTHORITARIANS
AUTHORIZATIONS AUTOBIOGRAPHER AUTOBIOGRAPHIC AUTOCOPROPHAGY AUTOCRATICALLY
AUTORADIOGRAMS AUTORADIOGRAPH AUTOTETRAPLOID AUTOTYPOGRAPHY AVASCULARITIES
AVERRUNCATIONS AVUNCULARITIES BACCALAUREATES BIOAERONAUTICS BRUTALISATIONS
BRUTALIZATIONS BUREAUCRATESES BUREAUCRATISED BUREAUCRATISES BUREAUCRATISMS
BUREAUCRATISTS BUREAUCRATIZED BUREAUCRATIZES CANTANKEROUSLY CARBURISATIONS
CARBURIZATIONS CAUTERISATIONS CAUTERIZATIONS CHATEAUBRIANDS CIRCUMAMBULATE
CIRCUMNAVIGATE CIRCUMSTANTIAL CIRCUMVALLATED CIRCUMVALLATES CLAIRAUDIENTLY
CLAUSTROPHILIA CLAUSTROPHOBIA COASTGUARDSMAN COASTGUARDSMEN COMMUNAUTAIRES
COMMUNITARIANS COMPURGATORIAL CONGRATULATING CONGRATULATION CONGRATULATIVE
CONGRATULATORS CONGRATULATORY CONNATURALISED CONNATURALISES CONNATURALIZED
CONNATURALIZES CONNATURALNESS CONSTABULARIES CONTRAPUNTALLY COUNTERASSAULT
COUNTERATTACKS COUNTERBALANCE COUNTERFACTUAL CYANOBACTERIUM DAUGHTERBOARDS
DEAMBULATORIES DEARTICULATING DECARBURATIONS DEGRANULATIONS DENATURALISING
DENATURALIZING DESQUAMATORIES DIAMANTIFEROUS DISARTICULATED DISARTICULATES
DISARTICULATOR DISNATURALISED DISNATURALISES DISNATURALIZED DISNATURALIZES
DOCUMENTARIANS ELEUTHEROMANIA EMPYREUMATICAL EQUIANGULARITY EXCLAUSTRATION
EXTRAFORANEOUS EXTRAVEHICULAR FLUNITRAZEPAMS FLUOROACETATES FRUITARIANISMS
GALACTOPHOROUS GASTRODUODENAL GASTROVASCULAR GLUTARALDEHYDE GRANDDAUGHTERS
GRATICULATIONS HARUSPICATIONS HEADQUARTERING HEPATOCELLULAR ICHTHYOSAURIAN
ILLUSTRATIONAL INACCURATENESS INARTICULACIES INARTICULATELY INARTICULATION
INTERAMBULACRA INTERJACULATED INTERJACULATES INTRACUTANEOUS INTRAMEDULLARY
INTRAMERCURIAL INTRAMOLECULAR INTRANSMUTABLE JOURNALISATION JOURNALIZATION
LATITUDINARIAN MACRODACTYLOUS MACROMUTATIONS MALACOSTRACOUS MANUFACTURABLE
MANUFACTURINGS MATRICULATIONS MINICALCULATOR MISARTICULATED MISARTICULATES
MISCALCULATORS MONOUNSATURATE MOUNTAINBOARDS MULTARTICULATE MULTICHARACTER
MULTIFACTORIAL MULTILATERALLY MULTIPARAMETER MULTIRACIALISM NATURALISATION
NATURALIZATION NEURASTHENIACS NEUROANATOMIES NEUROANATOMIST NEUROBLASTOMAS
NEUROFIBROMATA NEUTRALISATION NEUTRALIZATION NONBARBITURATE NONCONTRACTUAL
NONSPECTACULAR NONUTILITARIAN NUCLEARISATION NUCLEARIZATION NUDIBRANCHIATE
NUTRACEUTICALS OVERABUNDANTLY OVERACCENTUATE OVERARTICULATE OVEREVALUATING
OVEREVALUATION OVERPARTICULAR OVERSATURATING OVERSATURATION OVERVALUATIONS
PACHYDERMATOUS PALAEOCURRENTS PARALINGUISTIC PARAMENSTRUUMS PARANTHROPUSES
PARENCHYMATOUS PARTICULARISED PARTICULARISER PARTICULARISES PARTICULARISMS
PARTICULARISTS PARTICULARIZED PARTICULARIZER PARTICULARIZES PARTICULARNESS
PARTURIFACIENT PASTEURISATION PASTEURIZATION PAUPERISATIONS PAUPERIZATIONS
PERAMBULATIONS PERSUADABILITY PERTURBATIONAL PHARMACEUTICAL PHARMACEUTISTS
PHONAUTOGRAPHS PLEASURABILITY PLURALISATIONS PLURALIZATIONS POLYUNSATURATE
POPULARISATION POPULARIZATION PORTULACACEOUS POSTGRADUATION PREACQUAINTING
PREDEVALUATION PREMANUFACTURE PROPAEDEUTICAL PROTOLANGUAGES PURCHASABILITY
QUADRIGEMINATE QUADRILATERALS QUADRILITERALS QUADRUMVIRATES QUADRUPLICATED
QUADRUPLICATES QUAESTIONARIES QUARTERBACKING QUARTERMASTERS QUARTODECIMANS
QUASIPARTICLES QUODLIBETARIAN RADIOAUTOGRAPH REACQUAINTANCE REARTICULATING
REARTICULATION RECALCULATIONS RECAPITULATING RECAPITULATION RECAPITULATIVE
RECAPITULATORY RECTANGULARITY REGULARISATION REGULARIZATION REHUMANIZATION
REMANUFACTURED REMANUFACTURER REMANUFACTURES RESTAURANTEURS RHEUMATOIDALLY
RITUALISATIONS RITUALIZATIONS SALUTARINESSES SATURABILITIES SAUROPTERYGIAN
SECULARISATION SECULARIZATION SEPTUAGENARIAN SEPTUAGENARIES SLANTENDICULAR
SLANTINDICULAR SOLITUDINARIAN SOMNAMBULATORS SOUTHEASTWARDS SPECTACULARITY
SQUATTOCRACIES STRANGULATIONS STRATICULATION SUBAGGREGATION SUBALTERNATION
SUBPROLETARIAT SUBSATURATIONS SUBSTANTIATORS SUBTERRANEANLY SUMMARISATIONS
SUMMARIZATIONS SUOVETAURILIAS SUPERANNUATING SUPERANNUATION SUPERNATATIONS
SUPERNATURALLY SUPERSATURATED SUPERSATURATES SUPERTERRANEAN SUPRASEGMENTAL
TABULARISATION TABULARIZATION TELAUTOGRAPHIC TETRADACTYLOUS THAUMATOGRAPHY
THAUMATROPICAL THAUMATURGICAL THAUMATURGISMS THAUMATURGISTS THAUMATURGUSES
TINTINNABULARY TRADUCIANISTIC TRANSCAUCASIAN TRANSCUTANEOUS TRANSDUCTIONAL
TRANSEXUALISMS TRANSMUTATIONS TRANSSEXUALISM TRANSSEXUALITY TRANSVALUATING
TRANSVALUATION TRAUMATISATION TRAUMATIZATION TRAUMATOLOGIES TRIANGULATIONS
TURANGAWAEWAES TYRANNOSAURIDS ULTRACREPIDATE ULTRAFILTRATES ULTRAGLAMOROUS
ULTRAHAZARDOUS ULTRAMARATHONS ULTRAMASCULINE ULTRAMILITANTS ULTRAMINIATURE
ULTRAMONTANISM ULTRAMONTANIST ULTRAPATRIOTIC ULTRAPRACTICAL ULTRAREALISTIC
ULTRAROMANTICS ULTRAROYALISTS ULTRASONICALLY ULTRAWIDEBANDS UNACCULTURATED
UNALTERABILITY UNAPPRECIATION UNAPPRECIATIVE UNAPPROPRIATED UNAPPROPRIATES
UNARTIFICIALLY UNATTRACTIVELY UNATTRIBUTABLE UNATTRIBUTABLY UNBUREAUCRATIC
UNDERGRADUATES UNDERSATURATED UNDERSTANDABLE UNDERSTANDABLY UNDERVALUATION
UNDRAMATICALLY UNFRACTIONATED UNICAMERALISTS UNIFORMITARIAN UNILATERALISMS
UNILATERALISTS UNINGRATIATING UNIVERSITARIAN UNMANUFACTURED UNMATERIALISED
UNMATERIALIZED UNMATRICULATED UNMERCHANTABLE UNMETAPHORICAL UNNATURALISING
UNNATURALIZING UNPLEASANTRIES UNPRACTICALITY UNRECAPTURABLE UNRESTRAINABLE
UNROMANTICALLY UNSATISFACTORY UNSECTARIANISM UNSTANDARDISED UNSTANDARDIZED
UNTRANSFERABLE UNTRANSLATABLE UNTRANSLATABLY UNTRANSMUTABLE UPGRADEABILITY
URALITISATIONS URALITIZATIONS URANOGRAPHISTS URBANISTICALLY UTILITARIANISE
UTILITARIANISM UTILITARIANIZE VALETUDINARIAN VALETUDINARIES VERNACULARISTS
VILLEGGIATURAS VIRTUALISATION VIRTUALIZATION VULGARISATIONS VULGARIZATIONS
WHATABOUTERIES