intelligence

• As sharp as a tack

  This idiom describes someone who is exceptionally intelligent, quick-witted, and mentally alert.

• It's not rocket science.

  This phrase indicates that something is very simple and does not require exceptional intelligence or specialized knowledge.

• To be sharp as a tack

  To be very intelligent, quick-witted, and mentally acute.

• Thick as a brick

  Very unintelligent or exceptionally dull-witted.

• Quick-witted

  Possessing the ability to think and respond intelligently and rapidly, often with humor.

• Outsmart someone

  To defeat or gain an advantage over another person by using superior intelligence, cunning, or wit.