The phrase "minor fault" can be used to describe a small mistake or error. However, there are many synonyms that can be used to describe this type of issue. Words like hiccup, glitch, snag, blip, flaw, and imperfection can all be used to describe a minor fault. These words suggest a small, temporary problem that can easily be resolved. Other synonyms for minor fault include slip-up, oversight, and mishap. Using a synonym for minor fault can help to add variety to your writing and make your language more precise. It's important to choose the right word depending on the context and severity of the issue.