TSUMUGU · TOCFL B2 (est.) · 字
惰
惰 ＝ 忄 ＋ 隋
ㄉㄨㄛˋ · duò
adj — lazy, idle, slack
字源 FORM — what the parts do
忄義the heart
隋聲suí — gives the soundthe s worn across to d
ITsuí → duò — initial shifts to d, tone too (墮 duò shares it)
The heart (忄) gone slack — the old sense is irreverent, then plain lazy. 隋 suí carries the sound, worn from s to d, the same donor under 墮 duò. The unwilling heart: 懶惰, 惰性 — slack, hard to move.
故事 STORY — a scene to remember it by
心（忄）一點不想動，攤著——惰。
The heart (忄) wants nothing, just sprawls — idle.
字源記憶法
意 · Meanings
(本義)不敬— irreverent, careless
→懶惰— lazy, idle常用
⇒惰性— inertia, slackness
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
隋suíthe phonetic alone — 惰 adds the heart on the left墮＝ 土 ＋ duòthe same donor — earth 土 below where 惰 takes the heart