Fanboy is a term often used to describe someone who is overly enthusiastic and devoted towards a particular celebrity, product or franchise. Synonyms for this word include fanatic, enthusiast, devotee, admirer, zealot, or fanatic. These words all have a similar meaning, but each has a slightly different connotation. For example, a zealot may imply more extreme or excessive behavior than an enthusiast. Similarly, a devotee might suggest an even deeper level of loyalty than an admirer. Regardless of which word is used, it is clear that a fanboy is someone who is passionate about their chosen interest, often to the point of obsession.