smart ass
noun
a wise guy; know-it-all.
The grammatical form denoting more than one person, place, thing, or idea.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Lucas was blasted by everyone from smart-asses in Ain’t It Cool News’ comments section to Red Letter Media’s Mr. Plinkett, who showed, excruciatingly and shot by shot, how Lucas had screwed up.
From The New Yorker ● Jan. 4, 2016