smarty

/ˈsmɑːrti/
noun
  1. A person who tries to show they are clever, often in an annoying way.
    • My little brother is a real smarty, correcting my grammar all the time.
    • Don't be such a smarty — nobody likes a know-it-all.
    • The class smarty always raised his hand before the teacher finished the question.
  2. A clever or intelligent person (sometimes used playfully or affectionately).
    • Our team needs a smarty like you to figure out the budget.
    • Grandma called me a smarty when I fixed her computer.
    • You solved that puzzle in five minutes? You're a smarty!
Antonyms
What does "smarty" mean? | whatsthatwordmean | whatsthatwordmean