TSUMUGU · B1 (est.) · 字
嗨
ㄏㄞ · hāi
interjection — hi; hey; a sigh of regret
字源 FORM — what the parts do
Thǎi → hāi — only the tone shifted
A call out of the mouth (口) — the "hi" of greeting, or the "haih" of a sigh. 海 hǎi, the sea, lends the sound, the tone lifted level to hāi.
故事 STORY — a scene to remember it by
老遠看見人，嘴（口）一張就喊：「嗨——」
Spotting someone far off, the mouth (口) opens on a "hi."
字源記憶法
意 · Meanings
(假借)嗨，你好— hi, hey — a greeting常用
(假借)嗨，算了— haih — a sigh of regret
(本義) original meaning · → ⇒ each arrow = one more step of extension