pet peeve
Pet peeve (noun) means a small, specific thing that annoys you far more than it annoys most people. Example: “My biggest pet peeve is people who reply-all to a company-wide email.”
How to use pet peeve
Learner’s notesIn plain EnglishA little thing that really annoys you.
Informal and conversational; chiefly American in origin but now used everywhere. Plural is pet peeves.
The pattern is 'my pet peeve is...' or 'a pet peeve of mine'. Do not say 'I pet peeve'.
Trace the full origin ↓Fill the gap
Can you complete this real example?
My biggest _____ is people who reply-all to a company-wide email.
Etymology
From pet in the sense of 'favourite, particularly cherished' plus peeve, a back-formation from peevish meaning irritable.