to bet one's life
01
to express strongly and confidently that something is undoubtedly true or will certainly happen
![to [bet] {one's} (life|boots|bottom dollar) definition and meaning](https://cdn.langeek.co/photo/46670/original/?type=jpeg "to [bet] {one's} (life|boots|bottom dollar) definition and meaning")
Idiom
Informal
例
She would bet her life that her best friend would keep her secret.
to express strongly and confidently that something is undoubtedly true or will certainly happen
IdiomInformal
