There are 863 nine-letter words containing 2A and U, https://www.bestwordlist.com/c/a/3/9letterwordswithaau.htm
ABOIDEAUS ABOIDEAUX ABOITEAUS ABOITEAUX ABORTUARY ABUNDANCE ABUNDANCY
ACALCULIA ACANTHOUS ACCENTUAL ACCOURAGE ACCRUABLE ACCUSABLE ACCUSABLY
ACCUSANTS ACELLULAR ACETABULA ACHAENIUM ACICULATE ACIDULATE ACIDURIAS
ACQUAINTS ACQUIRALS ACQUITTAL ACTUALISE ACTUALIST ACTUALITE ACTUALITY
ACTUALIZE ACTUARIAL ACTUARIES ACTUATING ACTUATION ACTUATORS ACULEATED
ACULEATES ACUMINATE ACUTANCES ADJUTAGES ADJUTANCY ADJUTANTS ADJUVANCY
ADJUVANTS ADMEASURE ADULARIAS ADULATING ADULATION ADULATORS ADULATORY
ADUMBRATE ADUNCATED AERONAUTS AEROPAUSE AFFLUENZA AGERATUMS AGNATHOUS
AGUACATES AILANTHUS ALARUMING ALFAQUINS ALGUACILS ALGUAZILS ALLELUIAH
ALLELUIAS ALLOSAURS ALLUVIALS ALUMINATE AMAUROSES AMAUROSIS AMAUROTIC
AMBAGIOUS AMBULACRA AMBULANCE AMBULANTS AMBULATED AMBULATES AMBULATOR
AMBUSCADE AMBUSCADO AMENAUNCE AMIANTHUS AMPULLARY AMPUTATED AMPUTATES
AMPUTATOR AMUSEABLE ANACRUSES ANACRUSIS ANALOGOUS ANALOGUES ANANDROUS
ANANTHOUS ANGOSTURA ANGULARLY ANGULATED ANGULATES ANIMATEUR ANNUALISE
ANNUALIZE ANNUITANT ANNULARLY ANNULATED ANNULATES ANOMALOUS ANOVULANT
ANTELUCAN ANTIABUSE ANTIAUXIN ANTIFRAUD ANTIHUMAN ANTIQUARK ANTIQUARY
ANTIQUATE ANTIURBAN ANUCLEATE APATOSAUR APERTURAL APETALOUS APIACEOUS
APICULATE APOGAMOUS APPARATUS APPLAUDED APPLAUDER APPLAUSES AQUABATIC
AQUABOARD AQUACADES AQUADROME AQUAFABAS AQUAFARMS AQUALUNGS AQUANAUTS
AQUAPHOBE AQUAPLANE AQUAPORIN AQUARELLE AQUARIANS AQUARIIST AQUARISTS
AQUARIUMS AQUAROBIC AQUASCAPE AQUASHOWS AQUATINTA AQUATINTS AQUATONES
AQUILEGIA ARABESQUE ARAHUANAS ARAPUNGAS ARAUCARIA ARCATURES ARCHDUCAL
ARCHOSAUR ARCUATELY ARCUATION ARETHUSAS ARGONAUTS ARGUMENTA ARMATURED
ARMATURES ARMGUARDS AROUSABLE ARTICULAR ASEPALOUS ASEXUALLY ASPARAGUS
ASPECTUAL ASPHALTUM ASSAULTED ASSAULTER ASSUAGERS ASSUAGING ASSUASIVE
ASSUMABLE ASSUMABLY ASSURABLE ASSURANCE ASTRONAUT ATHENAEUM ATTENUANT
ATTENUATE AUBRETIAS AUBRIETAS AUBRIETIA AUCTORIAL AUDACIOUS AUDIENCIA
AUDIOGRAM AUDIOTAPE AUDITABLE AUDITORIA AULARIANS AULNAGERS AUMAILING
AUREATELY AURELIANS AURICULAE AURICULAR AURICULAS AURORALLY AUSLANDER
AUSPICATE AUSTRALES AUSTRALIS AUTACOIDS AUTARCHIC AUTARKIES AUTARKIST
AUTHORIAL AUTOBAHNS AUTOBANKS AUTOCADES AUTOCARPS AUTOCIDAL AUTOCLAVE
AUTOCRACY AUTOCRATS AUTODIALS AUTOFLARE AUTOGAMIC AUTOGRAFT AUTOGRAPH
AUTOHARPS AUTOLATRY AUTOLOADS AUTOMAGIC AUTOMAKER AUTOMATED AUTOMATES
AUTOMATIC AUTOMATON AUTOPHAGY AUTOPISTA AUTOPSIAS AUTOSAVED AUTOSAVES
AUTOSOMAL AUXILIARS AUXILIARY AVASCULAR AVAUNTING AVIFAUNAE AVIFAUNAL
AVIFAUNAS AVISANDUM AVIZANDUM AVUNCULAR AYAHUASCA AYAHUASCO AYURVEDAS
AZIMUTHAL AZOTURIAS BABIRUSAS BABIRUSSA BABUSHKAS BACALHAUS BACKHAULS
BALDAQUIN BALISAURS BANAUSIAN BARAGOUIN BARATHRUM BARBAROUS BAROSAURS
BARRACUDA BASIFUGAL BAUHINIAS BIANNUALS BIGARREAU BLASTULAE BLASTULAR
BLASTULAS BOUVARDIA BROUHAHAS BURRAWANG BURSARIAL CACAFUEGO CACHUCHAS
CACUMINAL CAERULEAN CALABOGUS CALADIUMS CALAMUSES CALCANEUM CALCANEUS
CALCTUFAS CALCULARY CALCULATE CALDARIUM CALENDULA CALIATOUR CALICULAR
CALLALOUS CALVARIUM CALYCULAR CAMPANULA CANICULAR CANNULATE CANTALOUP
CANTHARUS CANULATED CANULATES CAPACIOUS CAPITULAR CAPSULARY CAPSULATE
CARBURATE CARCAJOUS CARDAMUMS CARIACOUS CARJACOUS CARNAHUBA CARNAUBAS
CARNOSAUR CAROUSALS CARTULARY CARUCAGES CARUCATES CASCADURA CASUALISE
CASUALISM CASUALIZE CASUARINA CATALOGUE CATAMOUNT CATAPULTS CATERWAUL
CAUCHEMAR CAUDATION CAULINARY CAUMSTANE CAUSALGIA CAUSALGIC CAUSALITY
CAUSATION CAUSATIVE CAUSEWAYS CAUSTICAL CAUTERANT CENTAUREA CHALUMEAU
CHANUKIAH CHAQUETAS CHIHUAHUA CIGUATERA CLAUSTRAL CLAUSULAE CLAUSULAR
CLAVICULA CLAVULATE COADUNATE COAGULANT COAGULASE COAGULATE COMATULAE
COWABUNGA CREATURAL CRUSTACEA CUADRILLA CUMACEANS CURANDERA CURTALAXE
CYANURATE DAMASQUIN DATABUSES DECAUDATE DEVALUATE DIAPAUSED DIAPAUSES
DISABUSAL DOCUDRAMA DRAMATURG DULCAMARA DULCIANAS EASTABOUT EJACULATE
ELAEAGNUS EPIFAUNAE EPIFAUNAL EPIFAUNAS EQUATABLE ESTUARIAL ESTUARIAN
EULACHANS EUPHRASIA EUTHANASE EUTHANASY EUTHANAZE EVACUANTS EVACUATED
EVACUATES EVACUATOR EVALUABLE EVALUATED EVALUATES EVALUATOR EXCAUDATE
FABACEOUS FABULATED FABULATES FABULATOR FACTUALLY FAGACEOUS FALCULATE
FANTASQUE FAUXMANCE FIORATURA FLAMBEAUS FLAMBEAUX FRACTURAL FRAUDSMAN
FRAUGHANS FRAUTAGES FUMARASES FUMARATES FUMATORIA FURCRAEAS GADABOUTS
GALBANUMS GAMAHUCHE GAMARUCHE GAMBUSIAS GARGANTUA GASPEREAU GASTRAEUM
GASTRULAE GASTRULAR GASTRULAS GAUDEAMUS GAUGEABLE GAUGEABLY GLANDULAR
GLAUCOMAS GLUTAMATE GRADUALLY GRADUANDS GRADUATED GRADUATES GRADUATOR
GRANDAUNT GRANULARY GRANULATE GRANULOMA GRATULANT GRATULATE GUACAMOLE
GUACHAROS GUAIACOLS GUAIACUMS GUANABANA GUANAZOLO GUARACHAS GUARACHES
GUARACHIS GUARANIES GUARANTEE GUARANTOR GUARDABLE GUARDAGES GUARDANTS
GUARDIANS GUARDRAIL GUARDSMAN GUAYABERA GURDWARAS HABITUALS HABITUATE
HADROSAUR HANUKIAHS HARANGUED HARANGUER HARANGUES HATGUARDS HAULBACKS
HAULYARDS HAUSFRAUS HAUSTELLA HAUSTORIA HAZARDOUS HEADGUARD HEMATURIA
HIBAKUSHA HUARACHES HUARACHOS HUCKABACK HUNTAWAYS IGUANIANS INAUGURAL
INAURATED INAURATES INFATUATE ISPAGHULA JACQUARDS JACULATED JACULATES
JACULATOR JETTATURA KAUMATUAS KUMARAHOU LABDANUMS LABRUSCAS LACUNARIA
LANDAULET LANGLAUFS LANGUAGED LANGUAGES LANTHANUM LAQUEARIA LAUDANUMS
LAUDATION LAUDATIVE LAUDATORS LAUDATORY LAUGHABLE LAUGHABLY LAUNCHPAD
LAUREATED LAUREATES LAYABOUTS LEUCAEMIA LEUKAEMIA LUMINARIA LUNANAUTS
LUNARIANS LUNARNAUT LUNATICAL MACAHUBAS MACALLUMS MACRURANS MACULATED
MACULATES MAGALOGUE MAGNALIUM MAIASAURA MAIASAURS MAIREHAUS MALAGUENA
MALAMUTES MALARIOUS MAMAGUYED MANDUCATE MANGANOUS MANGULATE MANIPULAR
MANUBRIAL MANUMATIC MANURANCE MAQUISARD MARABOUTS MARABUNTA MARAUDERS
MARAUDING MARIHUANA MARIJUANA MARSQUAKE MARSUPIAL MARSUPIAN MATAGOURI
MATRICULA MATSUTAKE MATURABLE MATURATED MATURATES MATUTINAL MAUSOLEAN
MAXILLULA MAZAEDIUM MAZOURKAS MEGAFAUNA MEGAGAUSS MEGAQUAKE MEIOFAUNA
MELALEUCA MELANURIA MESHUGAAS MEZZALUNA MOSASAURI MOSASAURS MOUSSAKAS
MUCHACHAS MULTIPARA MUQADDAMS MUSCAVADO NAMAYCUSH NATURALLY NAUGAHYDE
NAUMACHIA NAUSEANTS NAUSEATED NAUSEATES NAVICULAR NAVICULAS NEURALGIA
NEUROMATA NONCASUAL NONCAUSAL NONMANUAL NULLIPARA NUNATAKER NUTARIANS
OCEANAUTS OMADHAUNS ORANGUTAN PADUASOYS PAGURIANS PAHAUTEAS PALANQUIN
PALLADIUM PALLADOUS PALUDINAL PALUSTRAL PANDURATE PANSEXUAL PAPPADUMS
PARACHUTE PARACUSES PARACUSIS PARAGOGUE PARALOGUE PARAMOUNT PARAMOURS
PARAMYLUM PARAQUATS PARAQUETS PARAQUITO PARAVAUNT PAROUSIAS PARTITURA
PASPALUMS PASTURAGE PAULOWNIA PAURAQUES PENNATULA PERIAGUAS PLANULATE
PLANURIAS PLATEAUED PLAUSTRAL PLUMDAMAS PLURIPARA PORTULACA POSTULATA
PRAELUDIA PRECAUDAL PROPAGULA PUZZOLANA QUAALUDES QUADPLAYS QUADRANTS
QUADRATED QUADRATES QUADRATIC QUADRATUS QUADRELLA QUADRIGAE QUADRIGAS
QUADRIVIA QUADRUMAN QUAFFABLE QUAMASHES QUANDANGS QUANTALLY QUANTICAL
QUARRIANS QUARRYMAN QUATRAINS QUILLAIAS QUILLAJAS RACAHOUTS RACCAHOUT
RADICULAR RAMBUTANS RAMPAUGED RAMPAUGES RANARIUMS RAPACIOUS RAUWOLFIA
REACTUATE REARGUARD REAROUSAL REVALUATE RIBATTUTA RUNAGATES RUSTICANA
RUTABAGAS SACCHARUM SACCULATE SACRARIUM SAFEGUARD SAGACIOUS SAGAPENUM
SALACIOUS SALERATUS SALIAUNCE SAMARIUMS SANCTUARY SAPUCAIAS SARGASSUM
SASANQUAS SASQUATCH SATURABLE SATURANTS SATURATED SATURATER SATURATES
SATURATOR SAUCEBOAT SAUCEPANS SAUFGARDS SCAPULARS SCAPULARY SEAQUAKES
SEAQUARIA SEPARATUM SHAMATEUR SIMAROUBA SIMARUBAS SIMULACRA SITATUNGA
SLANGUAGE SLANGULAR SOUVLAKIA SPATULATE SPIRACULA SQUAMATES SQUAMELLA
SQUAMOSAL SQUAMULAS SQUARIALS SUBAERIAL SUBAHDARS SUBAHDARY SUBAPICAL
SUBASTRAL SUBCAUDAL SUBSACRAL SUBSTRATA SUBVASSAL SUDAMINAL SUDATORIA
SUFFRAGAN SUGARALLY SUGARCANE SUGARCOAT SUGARLOAF SULFATASE SULTANATE
SURBAHARS TABLATURE TABULABLE TABULARLY TABULATED TABULATES TABULATOR
TACAHOUTS TACTUALLY TAIKONAUT TALUKDARS TAMANDUAS TAMBOURAS TANTALOUS
TANTALUMS TAPACULOS TAQUERIAS TARANTULA TARAXACUM TARPAULIN TARTAROUS
TAXACEOUS TAYASSUID TENTACULA THAUMATIN THESAURAL TRABECULA TRADUCIAN
TRAUMATIC TULAREMIA TURNAGAIN ULTRAFAST ULTRAHEAT ULTRARARE ULTRASAFE
UMBRACULA UNABASHED UNABATING UNABRADED UNACTABLE UNADAPTED UNAIDABLE
UNALARMED UNALLAYED UNAMASSED UNAMIABLE UNAPPAREL UNARRAYED UNASHAMED
UNASSAYED UNAVERAGE UNAWARDED UNAWARELY UNBALANCE UNBANDAGE UNCAPABLE
UNCINARIA UNDAMAGED UNDATABLE UNEATABLE UNFADABLE UNFAZABLE UNGALLANT
UNIPLANAR UNITARIAN UNMAKABLE UNMANACLE UNMANAGED UNNAMABLE UNNATURAL
UNPARTIAL UNPAYABLE UNRAVAGED UNSALABLE UNSALABLY UNSATABLE UNSATIATE
UNSAYABLE UNTAMABLE UNTAMABLY UNTAXABLE UPDATABLE UPHEAVALS UPSADAISY
UROLAGNIA URTICARIA USQUABAES VACUATING VACUATION VACUOLATE VAGARIOUS
VAGINULAE VALLECULA VALUABLES VALUATING VALUATION VALUATORS VANADIUMS
VANGUARDS VAPULATED VAPULATES VAULTAGES VAUNTAGES VAVASOURS VELATURAS
VIBRACULA VOCABULAR VULCANIAN VULGARIAN WALKABOUT WARRAGULS YARMULKAS
ZAIBATSUS ZARZUELAS