Smartaleck is a term used to describe someone who is overly confident and prone to making snarky comments. There are several synonyms for this term, including wiseacre, smarty-pants, and know-it-all. These terms are often used in a derogatory manner to describe someone who seems to think they know everything and feels the need to constantly prove it. Other synonyms for smart aleck include wise guy, smarty, and clever clogs. While these terms can be used playfully among friends, they can also be used as insults to put someone down for their perceived arrogance and disrespect. It is important to use these terms with caution and consideration for the feelings of others.