TSUMUGU · B2 (est.) · 字
誓
ㄕˋ · shì
verb — to swear, to vow; (noun) an oath
字源 FORM — what the parts do
IFzhé → shì — the initial and rhyme both shift
Words (言) under 折 zhé — to snap, to break off — for the sound, dragged far to shì. Words spoken to bind yourself, to cut off all retreat: an oath, a vow. 誓言、宣誓、發誓.
故事 STORY — a scene to remember it by
一句話（言）出口，像折（折）斷了退路——說出去就收不回。
The word (言) is spoken, and like a snapped branch (折) the way back is cut — once said, it cannot be taken back.
字源記憶法
意 · Meanings
(本義)誓言、發誓— to swear, an oath常用
→宣誓、誓約— to take an oath; a vow
(本義) original meaning · → ⇒ each arrow = one more step of extension