Where does “言い切る” come from?

言い切る (Japanese) comes from Japanese 切る, from Japanese 裏切り, from Japanese 裏 — back; behind; other side; inside; reverse side of...

言い切る (Japanese): declare, assert; finish saying

Definitions

  1. declare, assert; finish saying

Ancestry of “言い切る”, step by step

言い切る traces back through two separate lines of ancestry.

via Japanese 切る

StepLanguageWordMeaning
1Japanese切るto cut, to slice, to carve; cut down, fell, chop...
2Japanese裏切りtreachery, betrayal
3Japanese裏back; behind; other side; inside; reverse side of...

via Japanese 言う

StepLanguageWordMeaning
1Japanese言うto say, to tell somebody; to call, to name, to...
2Proto-Japonicipu—
Every word from Japanese 裏 →Every word from Japanese 切る →Every word from Japanese 裏切り →