TSUMUGU · TOCFL 2 (est.) · 字
許
ㄒㄩˇ · xǔ
verb — to allow; to promise; (許多) so much
字源 FORM — what the parts do
I≠wǔ → xǔ — the initial jumps with no family to carry it
Speech (言) that says yes — 說文: to heed. 午 wǔ gives a sound now jumped to xǔ. From consent (允許、許可) to the promise said aloud (許願), to the loose measure speech takes — 許多, so much.
故事 STORY — a scene to remember it by
他聽完，點一下頭：「好。」（言）一個字，事情就定了。
He hears it out and nods — "Good" (言). One word, and it's settled.
字源記憶法
意 · Meanings
(本義)答應（允許、許可）— to consent, allow常用
→許願、許諾— to promise
→許多、些許— such an amount — so many常用
(本義) original meaning · → ⇒ each arrow = one more step of extension