How do you pronounce 阿?

Q: How do you pronounce 阿? A: ngaa3, e.g.

阿 (ngaa3) — meaning, pronunciation, examples

阿 (ngaa3, ā) — prefix used before monosyllabic names, kinship terms etc to indicate familiarity; used in transliteration; also pr. [à]

阿乜人 (aa3 mat1 jan4) — a way to address somebody without knowing his name, similar to saying '"so and …
阿乜水 (aa3 mat1 seoi2) — a way to address someone whose name one does not know, cannot recall or does no…
阿二 (aa3 ji2) — the second wife or mistress of a man
阿仔 (aa3 zai2) — an appellation to address one's son
阿仙奴 (aa3 sin1 nou4) — Arsenal, a football team in the English Premier League
阿伯 (aa3 baak3) — an old man