What does "smarty" mean?

An obnoxiously clever or quick-witted person.

What is a synonym for "smarty"?

Common synonyms include: boldface, brazenface, chutzpanik, hussy, know-it-all, malapert.

/ˈsmɑː(ɹ)ti/ noun, slang

noun, slang ·Moderate ·College level

Noun

1
An obnoxiously clever or quick-witted person. informal
"Don't be stupid, be a smarty come and join the Nazi Party!"

"Don't be stupid, be a smarty come and join the Nazi Party!"

From smart + -y.