TSUMUGU · B2 (est.) · 字
迅
迅 ＝ 辶 ＋ 卂
ㄒㄩㄣˋ · xùn
adj — swift, rapid
字源 FORM — what the parts do
辶義the walk radical — motion, going
卂聲xùn — gives the sounda bird beating fast away — flight
Motion (辶) plus 卂 xùn — a bird beating its wings clear away. The two write speed: 迅速, 迅雷不及掩耳, 迅捷.
故事 STORY — a scene to remember it by
鳥（卂）一振翅，路（辶）上的影子已經掠過去了。
The bird (卂) beats once — and its shadow is already gone down the road (辶).
字源記憶法
意 · Meanings
(本義)迅速— swift, rapid常用
→迅猛— swift and fierce
→迅捷— quick and nimble
(本義) original meaning · → ⇒ each arrow = one more step of extension