万无一失

• 拼音: wàn wú yī shī
• 汉字拆解: 万 = ten thousand; 无 = pictograph of a dancer — absence; 一 = one (horizontal stroke); 失 = 手 (hand) + 乙 (twist) — to let slip from the hand

含义

Absolutely foolproof; with no possibility of failure; not a single thing can go wrong. Describes a plan or arrangement that is entirely safe and certain to succeed.

A four-character idiom (成语). Used to describe a plan, measure, or arrangement that has been so thoroughly prepared that failure is impossible. Often used in reassurance ('everything is taken care of') or in tactical planning. Can be used sincerely or ironically.

例句

1. 安保人员对每个细节都进行了反复核查，确保万无一失。
2. 他声称计划万无一失，但实施时还是出现了意外。
3. 这次手术风险较高，医生做了充分准备，力求万无一失。

用法指南

语境: planning, security, reassurance

语气: confident

正确说法

• 我们已经做好了充分的准备，力保万无一失。(We have made thorough preparations to ensure there is absolutely no room for error.)
• 虽然他说计划万无一失，我还是建议准备一个备用方案。(Although he says the plan is foolproof, I still recommend preparing a backup.)

错误说法

• 将万无一失用于描述已经失败的事情 — the phrase only fits prospective planning or reassurance, not retrospective assessment of what went wrong

起源与历史

万 (ten thousand) + 无 (without) + 一 (one) + 失 (loss, failure). Literally 'ten thousand without a single failure' — absolute certainty with no room for error.

文化背景

世代: All ages

社会背景: Universal