There are 601 nine-letter words containing A, E, I and 2R, https://www.bestwordlist.com/c/a/5/9letterwordswithaeirr.htm ABRIDGERS ACQUIRERS ACROSPIRE ACROTERIA ACTORLIER AEROTRAIN AFFIRMERS AIRDROMES AIRFRAMES AIRLINERS AIRPOWERS AIRPROXES AIRSCREWS AIRSTREAM AIRSTRIKE AMBERGRIS APHORISER APHORIZER APPRAISER APPRISERS APPRIZERS ARBITRAGE ARBITRATE ARBITRESS ARBORISED ARBORISES ARBORIZED ARBORIZES ARCHAISER ARCHAIZER ARCHERIES ARGUFIERS ARGYRITES ARMIGERAL ARMIGEROS ARMOURIES ARPILLERA ARRAIGNED ARRAIGNER ARREEDING ARRESTING ARRESTIVE ARRIVANCE ARRIVISME ARRIVISTE ARROWIEST ARROWLIKE ARTERIALS ARTERIOLE ARTERITIS ARTIFICER ARTILLERY ASPERSOIR ASTRINGER BAIRNLIER BARBARISE BARBARIZE BARBERING BARBWIRES BARGAINER BARRELING BARRICADE BARRICOES BARRIERED BARRIQUES BARRISTER BARTERING BERRIGANS BIGARREAU BIOMARKER BIRRETTAS BIRTHRATE BISERRATE BIZARRELY BORRELIAS BRAILLERS BRAMBLIER BRANCHIER BRASSERIE BRASSIERE BRAVERIES BREATHIER BRIARIEST BRIGADIER BURSARIES CABDRIVER CANKERIER CARABINER CARBINEER CARBINIER CARBURISE CARBURIZE CAREERING CAREERISM CAREERIST CAREGIVER CARNIVORE CARRIAGES CARRIOLES CARROTIER CARTRIDGE CARVERIES CASHIERER CATBRIERS CEDARBIRD CERBERIAN CERCARIAE CERCARIAL CERCARIAN CERCARIAS CERTAINER CHARRIEST CINERARIA CINERATOR CLARIFIER CORIANDER CORRASIVE CRACKLIER CRATERING CRIBELLAR CRITERIAL CROREPATI CURARINES CURARISED CURARISES CURARIZED CURARIZES CURTAILER DARRAIGNE DARRAINED DARRAINES DEBARRING DERAILERS DESPAIRER DIARRHEAL DIARRHEAS DIARRHEIC DIARRHOEA DISARMERS DISBARRED DISCARDER DISGRACER DISREGARD DISREPAIR DRAPERIED DRAPERIES DREARIEST DREARINGS DRERIHEAD EARRINGED EARTHLIER EARTHRISE EMBARRING ENGRAINER ENTRAINER EPIRRHEMA ERRANCIES ERRATICAL ERYTHRINA FAIRGOERS FARADISER FARADIZER FARMERIES FEDERARIE FERRIAGES FIREARMED FIREBOARD FIREBRAND FIREBRATS FIREBREAK FIREDRAKE FIREGUARD FIREMARKS FIRETRAPS FIREWATER FIRMWARES FLAVORIER FOREBRAIN FORESTAIR FORFAIRED FORFAITER FRAICHEUR FRANSERIA FRATCHIER FRATERIES GARBAGIER GARGARISE GARGARIZE GARNERING GARNISHER GARNITURE GARRIGUES GARTERING GERARDIAS GERIATRIC GRADELIER GRAMARIES GRANARIES GRANDSIRE GRANIVORE GRAPERIES GRATIFIER GREGARIAN GREGARINE GRENADIER GRIMACERS GUERRILLA HAGRIDERS HAIRDRIER HAIRDRYER HARBINGER HARDLINER HARDWIRED HARDWIRES HERBARIAL HERBARIAN HERBARIES HERBARIUM HERBIVORA HIERARCHS HIERARCHY HIEROCRAT HIEROGRAM HORSEHAIR HURRICANE HYPERARID IMMATURER IMPAIRERS IMPARTERS IMPERATOR IMPRESARI INCREASER INERRABLE INERRABLY INERRANCY INFRAREDS INGRAINER INNERWEAR INSNARERS INSTARRED INTERARCH INTERLARD INTERRACE INTERRAIL IRONWARES IRRADIATE IRREALITY IRREDENTA IRREGULAR IRRELATED IRRIDENTA IRRIGABLE IRRIGATED IRRIGATES IRRITABLE IRRITATED IRRITATES ITINERARY JARGONIER JASPERIER JERRICANS KARABINER KNARRIEST KRAMERIAS LADDERIER LAIRDLIER LATHERIER LIBERATOR LIBRAIRES LIBRAIRIE LIBRARIES LIPREADER LITERATOR MANRIDERS MARGARINE MARGARITE MARINERAS MARINIERE MARMARISE MARMARIZE MARRIAGES MARROWIER MARTYRIES MARTYRISE MARTYRIZE MARVERING MATTERIER MERCURIAL MERICARPS MISREGARD MORALISER MORALIZER MORASSIER MORTARIER MURRAINED NARRATIVE NATTERIER NUMERAIRE ORANGERIE ORATORIES ORATRICES ORATRIXES ORDAINERS ORDINAIRE ORGANISER ORGANIZER OVERGRAIN OVERHAIRS OVERTRAIN PAPERGIRL PARACRINE PAREGORIC PARRHESIA PARRICIDE PARRIDGES PARROTIER PARTRIDGE PARURESIS PARURETIC PERICARPS PERIKARYA PERISARCS PERITRACK PERRADIAL PERRADIUS PETRARIES PHRATRIES PIFFERARI PIFFERARO POLARISER POLARIZER PORIFERAL PORIFERAN PRACTICER PRACTISER PREACHIER PREARMING PRECARIAT PREORDAIN PREPARING PRETORIAL PRETORIAN PRETRAINS PRETRIALS PREVAILER PRIMARIES PRIMAVERA PRIORATES PRIVATEER PROGERIAS PUERPERIA QUAERITUR QUARRIERS QUARTIERS QUARTZIER QUAVERIER RABBITERS RABBITIER RACKETIER RAFTERING RAGGEDIER RAGGERIES RAGPICKER RAGTIMERS RAINMAKER RAINWATER RAINWEARS RAISINIER RANCHERIA RANCHERIE RANTERISM RAPTURISE RAPTURIZE RAREFIERS RAREFYING RARERIPES RASTERING RASTERISE RASTERIZE RATHERIPE RATHERISH RATHRIPES RATIFIERS RATTERIES RAUNCHIER RAVELLIER RAVISHERS REACQUIRE REAFFIRMS REALISERS REALIZERS REARGUING REARISING REBRACING REBURIALS RECAMIERS RECARRIED RECARRIES RECLAIMER RECRATING RECRUITAL RECTORIAL REDBAITER REDRAWING REEARNING REFRAINED REFRAINER REFRAMING REGAINERS REGARDING REGEARING REGIONARY REGISTRAR REGRADING REGRATING REHEARING REITERANT REITERATE RELIQUARY REMAILERS REMAINDER REMAINERS REMARKING REMARRIED REMARRIES REMIGRATE REORDAINS REPAIRERS REPAIRING REPAIRMAN REPAIRMEN REPARKING REPRIEVAL REPRIMAND REPRISALS RERACKING RERADIATE RERAILING RERAISING REREADING RESIDUARY RESTRAINS RESTRAINT RETAILERS RETAILORS RETAINERS RETARDING RETEARING RETIARIUS RETICULAR RETINULAR RETIRANTS RETRACING RETRAICTS RETRAINED RETRAINEE RETRAITES RETRAITTS RETRATING RETRIEVAL REVARNISH REVIBRATE REWARDING REWARMING REWEARING REWIRABLE RIBAUDRED RICEGRASS RICERCARE RICERCARI RICERCARS RICERCATA RIGMAROLE RIGSDALER RIPRAPPED RIVALRIES RIVERAINS RIVERBANK RIVERBOAT RIVERHEAD RIVERWALK RIVERWARD RIVERWAYS RODGERSIA ROSMARINE ROTIFERAL ROTIFERAN RUBRICATE RURALISED RURALISES RURALITES RURALIZED RURALIZES SATIRISER SATIRIZER SAVOURIER SCARIFIER SCARRIEST SCRAGGIER SCRANNIER SCRAPPIER SCRAWLIER SCRAWNIER SCREAKIER SEMIRURAL SERASKIER SERIGRAPH SERRANIDS SERRANOID SERRATING SERRATION SHIKARRED SHIRRALEE SIDEARMER SOWARRIES SPARERIBS SPARKLIER SPARRIEST SPARTERIE SPERMARIA SPIRASTER SPRAWLIER STARCHIER STARRIEST STARTLIER STIRRABLE STRAINERS STRAPPIER STREAKIER STREAMIER STRIATURE SWARTHIER TARNISHER TARRIANCE TARRINESS TARTARISE TARTARIZE TATTERIER TEARSTRIP TERMITARY TERNARIES TERRACING TERRAPINS TERRARIUM THRASHIER THREADIER THROATIER TIREMAKER TRACERIED TRACERIES TRAILERED TRAITRESS TRANSIRES TRANSPIRE TRASHTRIE TRATTORIE TRAVERTIN TREACLIER TRIALWARE TRIERARCH TRIHEDRAL TRILINEAR TRIQUETRA TRISERIAL TRITURATE TURBARIES UNCHARIER UNCRAZIER UNDERHAIR UNHAIRERS UNHARDIER UNHARRIED UNMARRIED UNMARRIES UNREADIER UNREPAIRS UNSCARIER UNWEARIER UPBRAIDER UPRAISERS UPREARING URINARIES VAPORISER VAPORIZER VAPOURIER VARNISHER VERATRIAS VERATRINE VERATRINS VERBARIAN VICARLIER VRAICKERS WARDERING WARREYING WATERBIRD WIREDRAWN WIREDRAWS WIREFRAME WIREGRASS WIREHAIRS WREATHIER