The List
There are 649 5 letter words with A as the last letter. The highest scoring is HUZZA at 26 points in Scrabble. 198 carry three or more vowels, which makes them useful for dumping a vowel-clogged rack.
ABACAABAKAABAYAABOMAABUNAACETAADYTAAECIAAFARAAGAMAAGILAAGITAAGORAAGRIAAGUNAAINGAAJIVAAJUGAAKELAAKITAALAPAALDEAALIYAALOHAALPHAALULAAMEBAAMIGAAMNIAANANAANATAANIMAANTRAAORTAAPNEAARABAARECAARENAAREPAAROBAAROHAAROMAASANAASYLAATRIABABKABACCABACHABAIZABAJRABAKRABALSABANDABANIABANYABARCABARRABASTABATTABELGABENGABETTABHUNABIGHABIOTABIVIABOCCABOHEABONZABORNABOYLABRAVABRAZABUBBABUFFABULLABUNIABUNYABURKABURQABURSABWANACAECACALLACALPACANNACARTACAUDACAUSACEIBACELLACERIACESTACHANACHARACHAYACHEKACHELACHICACHINACHOLACHOTACHUFACILIACIRCACNIDACOALACOBIACOBRACOBZACOCOACOLZACOMMACONGACONIACOPRACORIACOSTACOTTACOUTACRENACRURACULPACUPPACURIADABBADACHADAGGADARGADELTADERMADICTADINNADIOTADIVNADOBLADOBRADOGMADOLIADOLMADONGADONNADOONADORBADORSADOULADOUMADOURADOWNADRAMADUKKADULIADUMKADURRAEDEMAENEMAENTIAERBIAERICAETYMAEXTRAFACIAFAENAFANGAFATWAFAUNAFELLAFERIAFESTAFETTAFETWAFINCAFITNAFLAVAFLORAFLOTAFOLIAFONDAFORZAFOSSAFOVEAFRENAFURCAGABBAGAITAGALEAGAMBAGAMMAGANJAGARDAGEMMAGENOAGENUAGLEBAGOGGAGOMPAGONIAGONNAGOTTAGOURAGRAMAGRANAGROMAGUANAGUAVAGUMMAGUSLAGUTTAGYOZAHAIKAHAKEAHALFAHALMAHALVAHAMBAHAMZAHANSAHAOMAHASTAHATHAHEJRAHENNAHERMAHEVEAHIJRAHODJAHOLLAHONDAHOOKAHOSTAHOVEAHUDNAHURRAHUTIAHUZZAHYDRAHYENAHYPHAIDOLAINDIAINFRAINTRAINULAIXORAJAFFAJAGRAJARTAJHALAJIBBAJIRGAJNANAJUNTAKAAMAKACHAKAIKAKALPAKANGAKAPPAKARMAKASHAKEEMAKEHUAKERMAKHAYAKHEDAKHOJAKIBLAKINDAKIPPAKOALAKOFTAKOKRAKOPPAKORMAKOURAKRONAKURTAKWELALABDALABRALAIKALAKSALAMIALARVALAURALAVRALEHUALEMMALEPRALEPTALEZZALIANALIBRALIMBALIMMALIMPALINGALLAMALOGIALONGALOOFALOUMALUBRALUFFALUTEALYCEALYCRALYSSALYTTAMAFIAMAGMAMAHUAMAHWAMALVAMALWAMAMBAMAMMAMANGAMANIAMANNAMANTAMARIAMARKAMASSAMATZAMBIRAMECCAMEDIAMEKKAMELBAMENSAMENTAMICRAMIKRAMILIAMILPAMIRZAMISSAMOCHAMOHUAMOIRAMOLLAMOMMAMOOLAMORIAMORRAMOTZAMOWRAMUDRAMUGGAMULGAMULLAMUNGAMURRAMURVAMUSCAMUSHAMYOMANABLANAIRANAKFANALLANAMMANANNANANUANAPPANERKANGANANGOMANINJANORIANORMANUBIANUCHANULLANYALANYSSAOCREAOIDIAOMASAOMEGAOPERAORGIAORIXAOSSIAOSTIAOUIJAPACHAPACTAPADMAPAISAPAKKAPALEAPALLAPAMPAPANDAPANGAPARKAPARRAPASHAPASTAPATKAPELMAPELTAPENNAPEPLAPEREAPHOCAPHYLAPICRAPIETAPILEAPINNAPINTAPITTAPIZZAPLAYAPLAZAPLENAPLICAPOAKAPODIAPOLKAPONGAPOOJAPOOKAPOPPAPORTAPRANAPRESAPRIMAPRUTAPSORAPUCKAPUKKAPULKAPUNGAPUNKAPURDAQIBLAQORMAQUENAQUINAQUOTARAGGARAITARAKIARANGARASTARATHAREATARECTAREDIAREGMAREGNARENGAREPLARETIARHYTARIATARIOJAROOSARUANARUEDARUMBARUPIARUSMASABHASABRASACRASADZASAIGASAKIASALPASALSASAMBASANGASANSASAOLASAUBASAUNASCALASCAPASCENASCHWASCOPASCUBASCUTASELLASELVASENNASENSASENZASEPIASEPTASERRASESSASHAMASHAYASHEVASHIVASHOLASHURASIDHASIGLASIGMASIGNASILVASIMBASIRRASITKASOFTASOPRASORDASORRASORTASPICASPINASPUTASTELASTIPASTOMASTRIASTUPASUBHASULFASUMMASUNNASUPRASURRASUTRASUTTASYLVATAATATABLATAFIATAGMATAIGATAIRATALEATALMATALPATANGATANKATANNATAPPATARGATAYRATAZZATECTATEGUATELIATENIATERGATERRATESLATESTATETRATHANATHECATHEMATHETATHUJATHUYATIARATIBIATICCATIKKATINEATOMIATONGATONKATORTATREFATREMATRONATRYMATSUBATUGRATUINATULPAULAMAULEMAULTRAUMBRAUNCIAURBIAURENAUSNEAUVULAVACUAVANDAVARIAVARNAVEENAVERRAVESPAVESTAVIFDAVIGIAVILLAVINCAVIOLAVIRGAVISTAVITTAVIVDAVODKAVOEMAVOILAVOLTAVOLVAWAGGAWALLAWANNAWHATAWICCAWIGGAWILGAWILJAWINNAWIRRAWISHAWOKKAWONGAWUXIAXENIAXOANAYABBAYACCAYACKAYAKKAYARFAYARTAYENTAYERBAYUCCAYURTAZABRAZAMIAZANJAZANZAZEBRAZERDAZILLAZOAEAZONDAZOOEAZOPPA