啊
a
modal particle ending sentence, showing affirmation, approval, or consent
啊 — the spoken affirmation particle
啊 was borrowed for its sound (from 阿, pronounced ā) and given a mouth radical to mark it as a spoken utterance. It has no compositional meaning — it is the sound of a voice affirming, agreeing, or softening a sentence.
口MouthSemantic
阿A prefix used in names and kinship termsPhonetic