万无一失 (wàn wú-yì shī) — surefire; absolutely safe; foolproof
Definition
A chengyu meaning 'absolutely safe, foolproof' — used for plans, systems, or precautions where there is no chance of failure. The 失 ('lose/error') focuses on risk of error, not on emotional peace like 无忧无虑.
phrase
surefireabsolutely safefoolproof
Examples
- ，万无一失。Zhè ge jì huà ān pái dé shí fēn zhōu mì, kě yǐ shuō shì wàn wú-yì shī.This plan is arranged very meticulously; you could call it foolproof.
- 万无一失，。Wèi le wàn wú-yì shī, wǒ men jiǎn chá le sān biàn mì mǎ.To be absolutely safe, we checked the password three times.
- ，万无一失。Zhè ge xì tǒng cǎi yòng duō chóng bèi fèn, zuò dào wàn wú-yì shī.This system uses multiple backups to achieve zero risk.
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