noun
A person who is regarded as knowledgeable or clever
adjective
Clever or intelligent in a cheeky or cocky way
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The young girl was known for being a real smarty in her class, always answering questions correctly.
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My brother thinks he's such a smarty, always coming up with clever comebacks.
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Don't be such a smarty pants, just admit when you don't know the answer.
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She played the game like a chess master, moving her pieces strategically like a true smarty.