あああ

あああ, あーあ, あーー, アアア, アーア, アーーaaa

interjection

  1. aah!
  2. ooh!
  3. oh no!
  4. oh boy!

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences