万无一失
Traditional form:
萬無一失
Pinyin (reading):
wànwúyīshī
Definitions:
- surefire; absolutely safe (idiom)
Characters:
- 万 - ten thousand; innumerable
- 无 - no, not; lacking, -less
- 一 - one; a, an; alone
- 失 - to lose; to make a mistake, to neglect
Traditional characters: