万无一失 / 萬無一失

wàn​wú​yī​shī

surefire

absolutely safe; guaranteed not to fail; describes a situation where there is zero chance of an error occurring

wàn​wú​yì​shī

万 (literal) → 万/萬 · wàn · absolutely 无 (literal) → 无/無 · wú · to not have 一 (literal) → 一 · yī · one 失 (literal) → 失 · shī · mistake

Changed: simplified, traditional, gloss, definition, pinyin, variant pinyin, variants, separable parts, decomposition

created sense May 20, 2026, 07:57 PM