malfunction

This term carries a clinical or technical tone, typically used in engineering, computing, or medicine to describe a specific failure of a system. It suggests a deviation from a prescribed operational standard rather than a total destruction or permanent break.

As a noun, it refers to the event or state of failing. As a verb, it describes the process of operating incorrectly. Unlike "break," which often implies physical damage, a malfunction can occur in software or biological processes where no physical part is visibly broken.