entries → 汰
TSUMUGU · TOCFL C1 (est.) · 字
汰 character · TOCFL C1 (est.)
汰 ＝ 氵 ＋ 太
ㄊㄞˋ · tài
verb — to wash out, eliminate; to weed out

字源 FORM — what the parts do

氵義water — washing through
太聲tài — gives the sound大 with a dot, the utmost
Water (氵) rushing through to carry off the dross — to wash out, to weed out: 淘汰、汰選. 太 tài carries the sound exactly. What the current sweeps away is the eliminated remainder.

故事 STORY — a scene to remember it by

大水（氵）一過，留下的留下，沖走的沖走——汰。
The water (氵) sweeps through — what holds, holds; what doesn't is washed away.
字源記憶法
意 · Meanings
(本義)沖洗、淘去— to wash out, rinse away
→淘汰、汰選— to eliminate, weed out常用
⇒汰換、汰舊— to replace, retire the old
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
太tàithe bare phonetic — the utmost沃wòthe water cousin — 氵 plus a different element, to irrigate