interjection, onomatopoeia · exclamation used to express surprise, wonder, or admiration

哇！这里的景色太美了！

onomatopoeia · onomatopoeia for the sound of a child or baby crying loudly

小宝宝哇地一声哭了出来。

onomatopoeia · onomatopoeia for the sound made when vomiting

他感到一阵恶心，哇地吐了一地。

modal particle · replaces 啊 a when following the vowel "u" or "ao"

真好哇！