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一言為定

简一言为定 · 繁一言為定

Mandarin · pinyin yī yán wéi dìng

(idiom) it's a deal
that's settled then

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Characters in this entry

一: yī · one; a, an; alone
言: yán · words, speech; speak, say; Kangxi radical 149
為: Look up this written character
定: dìng · decide, settle, fix
为: wèi · do, handle, govern, act; be

Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

1–2–2–4 · yi1 yan2 wei2 ding4

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Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

一言為定 · find source passages ↗ · 一言为定 · find source passages ↗

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Compare dictionary sources Wiktionary · 1 sense

Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

phrase

(idiomatic) that's settled then; it's a deal

Source page · dump 2026-09-02 · Contributors & history

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