Pronunciation: /noʊ ɪt ɔːl/
noun a person who acts as though they know everything and is often annoyingly boastful about it
A1 My little brother always acts like a know-it-all.
A2 She can be a bit of a know-it-all when it comes to history trivia.
B1 The new intern is a know-it-all and it's starting to annoy the team.
B2 I used to be a know-it-all in my younger days, but I've learned to listen more.
C1 His reputation as a know-it-all precedes him wherever he goes.
C2 The professor's know-it-all attitude often alienates his students.
formal The professor was often perceived as a know-it-all due to his extensive knowledge in the subject.
informal My coworker is such a know-it-all, always correcting everyone during meetings.
slang Don't be such a know-it-all, no one likes a show-off.
figurative She acted like a know-it-all when it came to fashion, always giving unsolicited advice to others.
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have known-it-all
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