TSUMUGU · TOCFL 1 (est.) · 字
喔
ㄛ · ō
interjection — oh (realization); a soft sentence-end "you know"
字源 FORM — what the parts do
ITwū → ō — the mouth-sound bent the reading
A rounded sound out of the mouth (口) — the "oh" of it landing, or a soft tag at a sentence's end. 屋 wū supplies the sound, the same donor under 握, smoothed to a bare ō.
故事 STORY — a scene to remember it by
想通了，嘴（口）圓圓地應一聲：「喔——」
It lands; the mouth (口) rounds out a soft "oh."
字源記憶法
意 · Meanings
(假借)喔，我懂了— oh — I see now常用
(假借)好喔— okay, you know (soft tag)常用
(本義) original meaning · → ⇒ each arrow = one more step of extension