TSUMUGU · TOCFL B2 (est.) · 字
蒙
蒙 ＝ 艹 ＋ 冡
ㄇㄥˊ · méng
verb — to cover; to receive (a favor); to deceive; dim (蒙蔽, 蒙受, 啟蒙)
字源 FORM — what the parts do
艹義grass
冡聲méng — gives the sounda cover (冖) over a pig (豕) — pulled over, hidden
Grass (艹) over 冡 méng, and 冡 is already a cover pulled down over something. 說文 names a creeping plant, but the live sense is the covering: grass thrown over a thing hides it — 蒙蔽、蒙昧, the dimness; 蒙受、承蒙, what gets laid on you.
故事 STORY — a scene to remember it by
一把草（艹）蓋下來（冡），底下的東西看不見了——蒙住了。
A handful of grass (艹) thrown down as a cover (冡) — whatever's under it goes dark.
字源記憶法
意 · Meanings
(本義)蒙（艸名）— a creeping plant
→蒙蔽、蒙昧— to cover over; dim, ignorant常用
⇒蒙受、承蒙— to receive (what's laid on you)
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
冡méngthe phonetic, bare — a cover over a pig; 蒙 adds grass on top朦méngthe sibling — moonlight 月 dimmed instead of grass