Three bagger is a baseball term used to describe a triple hit. However, if you are looking for some synonyms to spice up your conversation, here are a few options. First off, you could use the more formal term triple, which is often used in official baseball records and stats. Alternatively, you could use phrases like three-base hit or three-base knock. If you want to add some color to your language, try out some slang terms like a three-bagger, a three-banger, or a booster. Whatever term you choose to use, the triple hit is always an exciting moment in a baseball game.