entries → 嘻
TSUMUGU · C1 (est.) · 字
嘻 character · C1 (est.)
嘻 ＝ 口 ＋ 喜
ㄒㄧ · xī
interjection/verb — a laugh; to giggle (嘻嘻, 嘻笑)

字源 FORM — what the parts do

口義mouth — the laugh comes out
喜聲xǐ — gives the soundjoy — a drum over a mouth
Txǐ → xī — the tone lifts to the open laugh
The mouth (口) laughs and 喜 xǐ carries both the sound and the joy, tone lifted to xī. A grin written down — 嘻嘻、嘻笑、嘻皮笑臉.

故事 STORY — a scene to remember it by

一臉的喜（喜）從嘴角（口）漏出來——嘻嘻笑了。
The joy (喜) leaks out at the corner of the mouth (口) — a giggle.
字源記憶法
意 · Meanings
(本義)嘻嘻、嘻笑— to giggle, laugh常用
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
喜＝ 壴 ＋ 口xǐthe sound-and-joy half — 嘻 adds 口, 喜 alone is the gladness嬉xīthe play sibling — 嬉 adds 女 for fun, 嘻 keeps 口 for the laugh