万无一失

wànwú-yìshī

surefire; absolutely safe (idiom)

HSK 7

漢字分解

万无一失 (wànwú-yīshī) is an idiomatic phrase meaning "absolutely no mistakes" or "foolproof." It is used to describe plans or actions that are perfectly safe and reliable.

Usage

  • Often used to emphasize thorough preparation or reliability.
  • Common in formal or professional contexts.

Common Collocations

Nuance

Conveys confidence in the flawless execution of something. Avoid using it for casual or uncertain situations.

例文

这次计划万无一失,我们准备得很充分。

Zhè cì jìhuà wànwú-yīshī, wǒmen zhǔnbèi de hěn chōngfèn.

This plan is foolproof; we have prepared thoroughly.

他做事总是万无一失,非常细心。

Tā zuòshì zǒng shì wànwú-yīshī, fēicháng xìxīn.

He always does things without any mistakes; very careful.

我们要确保万无一失,不能有任何差错。

Wǒmen yào quèbǎo wànwú-yīshī, bùnéng yǒu rènhé chācuò.

We must ensure it is foolproof, with no errors at all.