Suckerpunch is a slang term that refers to an unexpected or cheap shot. It is often used to describe a physical attack that catches someone off guard and leaves them vulnerable. There are several words that can be used as synonyms for suckerpunch, including blindside, ambush, surprise attack, and haymaker. These words all convey the sense of being taken by surprise or caught unaware, and can be used in a variety of contexts. Whether you are describing a sports play or a political move, using synonyms for suckerpunch can help you convey the unexpectedness and unfairness of the situation.