The List
There are 322 4 letter words with A as the last letter. The highest scoring is ZYGA at 17 points in Scrabble. 32 carry three or more vowels, which makes them useful for dumping a vowel-clogged rack.
ABBAACCAACTAAGHAAGMAAIDAAIGAALBAALFAALGAALMAAMIAAMLAANGAANNAANOAANSAANTAAQUAARBAAREAARIAARNAARPAASEAATMAATUAAULAAURABABABEMABETABIGABIMABOBABOLABOMABONABORABOTABUBABUDABUNABURACABACACACAMACAPACASACAVACECACHIACOCACODACOLACOMACOXACRIACYMADADADATADEVADIKADISADITADIVADIYADONADOPADUKADUMADURAEGMAEINAEKKAEMMAEPHAETNAEYRAFAVAFETAFILAFLEAFORAGAGAGALAGAMAGENAGETAGIGAGILAGLIAGORAGUGAGULAHAHAHAKAHILAHIYAHOHAHOKAHOMAHORAHOYAHUIAHULAHUMAHYLAIDEAILEAILIAILKAINIAIOTAISBAISNAIXIAJAFAJAGAJAVAJOTAJUBAJUGAJURAKAKAKAMAKANAKAPAKARAKATAKAVAKAWAKETAKINAKIVAKOHAKOKAKOLAKORAKUIAKULAKUNAKUTALAMALANALAVALEVALIMALIPALIRALOCALOMALOTALUMALUNALYRAMAHAMALAMAMAMANAMARAMASAMAYAMEGAMELAMESAMETAMICAMIHAMINAMOLAMONAMORAMOWAMOXAMOYAMURAMYNANADANAGANALANANANAPANEMANIPANOMANONANOTANOVAOBIAOCTAODEAOHIAOKRAOKTAOLEAOLLAORCAORRAOSSAOUMAOUPAPACAPAPAPARAPAUAPAWAPEBAPELAPICAPIKAPILAPIMAPINAPIPAPITAPLEAPROAPUHAPUJAPUKAPULAPUMAPUNAPUPARACARAGARAIARAJARANARATARAYARHEARIBARIMARIVARIZAROMAROTARUGARUSASAGASAMASENASERASETASHEASHWASIDASIKASIMASKUASOBASOCASODASOFASOJASOLASOMASORASOYASTOASUBASURATAHATAKATALATANATAPATARATAVATAWATAXATELATEPATIKATINATOEATOGATOLATORATOSATUBATUFATUNAULNAULVAUMMAUMRAUPTAUREAURSAURVAUVEAVARAVASAVEGAVELAVENAVERAVIGAVINAVISAVITAVIVAVOLAWAKAWAWAWEKAWENAWETAWHOAYABAYOGAYUCAYUGAZETAZILAZOEAZONAZUPAZYGA