intelligence
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As sharp as a tack
This idiom describes someone who is exceptionally intelligent, quick-witted, and mentally alert.
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It's not rocket science.
This phrase indicates that something is very simple and does not require exceptional intelligence or specialized knowledge.
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To be sharp as a tack
To be very intelligent, quick-witted, and mentally acute.
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Thick as a brick
Very unintelligent or exceptionally dull-witted.
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Quick-witted
Possessing the ability to think and respond intelligently and rapidly, often with humor.
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Outsmart someone
To defeat or gain an advantage over another person by using superior intelligence, cunning, or wit.