TSUMUGU · B2 (est.) · 字
顛
ㄉㄧㄢ · diān
noun — the top, the crown, the summit; verb — to topple, jolt
字源 FORM — what the parts do
IFzhēn → diān — the initial and vowel both shift far off the donor
The very top of the head (頁) — the crown, the summit. 真 carries the sound, shifted far from zhēn to diān. From the highest point: 山顛, a mountain top; and from a top knocked off its place: 顛覆, to overturn; 顛簸, to jolt and pitch.
故事 STORY — a scene to remember it by
爬到山的頭頂（頁），上面再沒有路——到顛了。
You climb to the very head (頁) of the mountain, no path above — the summit.
字源記憶法
意 · Meanings
(本義)山顛、顛頂— the top, the summit常用
→顛覆— to overturn, topple — a top knocked off常用
→顛簸— to jolt, pitch常用
(本義) original meaning · → ⇒ each arrow = one more step of extension