The term cherry-popper is slang for someone who is inexperienced in a particular activity. There are a number of synonyms that can be used in place of cherry-popper. Such terms include greenhorn, novice, beginner, apprentice, rookie, and neophyte. A greenhorn is someone who is new to a particular environment or job. A novice is someone who lacks experience in a particular field or activity. An apprentice is someone who is learning a trade or skill under the guidance of a skilled professional. A rookie is someone who is new to a particular sport or activity. Finally, a neophyte is someone who is new to a particular religion or philosophy.