The word "busybody" is commonly used to describe someone who is prying or meddling in the affairs of others. However, there are several other synonyms that can be used to convey a similar meaning. "Nosy" is a word often used to describe someone who is intrusive or overly curious about others' affairs. "Meddlesome" refers to someone who interferes with or involves themselves in other people's business. "Interfering" and "inquisitive" are also possible synonyms for "busybody." Additionally, "gossip" can sometimes be used to describe someone who is prying into other people's affairs, though it specifically refers to the spreading of rumors or information.