noun a person who pretends to be knowledgeable or clever; a know-it-all
The wiseacre sidekick in the movie added humor to the otherwise serious storyline with their witty one-liners.
The wiseacre character in the novel provided comic relief through their sarcastic remarks and clever quips.
The wiseacre influencer on social media gained a large following due to their sharp wit and humorous commentary on current events.
The stand-up comedian's persona was that of a wiseacre, constantly poking fun at society's norms and expectations.
A writer may use the term 'wiseacre' to describe a character in a story who is always making sarcastic or clever remarks.
A psychologist may use the term 'wiseacre' to describe a patient who uses humor as a defense mechanism.