TSUMUGU · B1 (est.) · 字
澈
ㄔㄜˋ · chè
adj — clear, transparent to the bottom
字源 FORM — what the parts do
Water (水) you can see straight through — clear to the bottom. 徹 chè carries the sound exactly. From water without a speck in it, the word reaches anything seen to its very depth: 清澈、澄澈、澈底.
故事 STORY — a scene to remember it by
溪水（水）清得見底，石頭、游魚，看穿到底——澈。
The stream (水) so clear you see the stones and the darting fish, all the way down — through and through.
字源記憶法
意 · Meanings
(本義)清澈、澄澈— clear, transparent常用
→澈底— thorough, to the very bottom
(本義) original meaning · → ⇒ each arrow = one more step of extension