Prepped is a colloquial term used to describe being prepared or ready for a certain task or event. There are a multitude of synonyms that can be used in place of this word, depending on the context and tone. For example, synonyms for prepped could include primed, geared up, girded, braced, or readied. Other alternatives include organized, arranged, planned, or even projected. Each of these words has slight variations in meaning, but all convey the sense of being prepared and ready to face whatever comes your way. So, when you need to indicate that you're ready to take on the world, try substituting prepped with one of these other similarly spirited words.