able or likely to make mistakes

We place our trust in doctors, but they are fallible like everyone else. 我们信任医生，但即使是他们也会犯错。

A fallible object or system is likely not to work in a satisfactory way.

This method is more fallible than most because it depends on careful and accurate timing. 这种方法比大多数方法更容易出错，因为它需要仔细精确的计时。