万无一失
wànwú-yìshī
absolutely safe; foolproof
Every meaning
wànwú-yīshī
- absolutely safe; foolproof
Its characters
- 万wànten thousand
- 无wúnot have; without
- 一yīone
- 失shīto lose
Words with 万
Words with 无
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).