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Know-it-all
01
someone who thinks he knows everything and refuses to accept advice or information from others
例
The know-it-all put their two cents' worth into every conversation, even when no one asked for it.
The know-it-all put in their two pennyworth into every conversation, even when no one asked for it.
The teacher brought the know-it-all student down a notch by asking him a question that he couldn't answer.
He's always acting like a know-it-all smartarse.
