A pet peeve is something small that bothers you way more than it probably should. It's not a major problem or a serious issue, just an annoying habit or behavior that gets under your skin every single time you encounter it. The “pet” part makes it personal: it's your particular annoyance that you notice and remember.

Everyone has different pet peeves. One person's pet peeve might be when someone chews with their mouth open. Another person might get frustrated when people don't push their chairs in after leaving a table. Maybe your pet peeve is when someone interrupts you mid-sentence, or when your sibling leaves their dirty socks on the living room floor, or when people say “like” every other word.

Pet peeves are interesting because they can reveal what matters to you. If messy handwriting drives you crazy, you probably value neatness and clarity. If loud chewing bothers you, you might be more sensitive to sounds than other people are.

When you tell someone about your pet peeves, you're helping them understand what bothers you, which can make living or working together easier. Just remember: what annoys you intensely might not bother someone else at all.