Definition of Smarty-pants
Smarty-pants
smar·ty-pants
Definition/Meaning
(noun)
(informal, often insulting) a person who talks or behaves as if they know everything and who thus ignores advice given to them, with the effect of appearing obnoxious, arrogant, and/or pretentious;
e.g. She was acting like a smarty-pants, so they asked her to leave.
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