wàn
shī

HSK 7-9
idiom
common

Meaning of 万无一失

万无一失 means absolutely certain; perfectly safe; no chance of error. Pronounced wàn wú yī shī. HSK 7-9.

  • absolutely certain; perfectly safe; no chance of error

Definitions & Examples

Zhè
ge
huà
men
fǎn
tuī
yǎn
guo
 
bǎo
zhèng
wàn
shī
 

We have rehearsed this plan repeatedly, and I guarantee it's foolproof.

Yóu
qīn
cāo
zuò
 
zhè
shǒu
shù
dìng
wàn
shī
 

With him performing the operation personally, this surgery will be absolutely safe.

Wéi
què
bǎo
wàn
shī
 
men
zhǔn
bèi
le
sān
tào
bèi
fèn
fāng
àn
 

To ensure there's no risk of failure, we have prepared three backup plans.

shì
guān
zhòng
 
zuò
dào
wàn
shī
 

This matter is of great importance, and we must ensure it's perfectly secure.

men
de
ān
bǎo
cuò
shī
jīng
guò
le
jīng
xīn
shè
 
shuō
shì
wàn
shī
 

Our security measures have been meticulously designed and can be said to be fail-safe.