fanboy /ˈfænˌbɔɪ/noun 1verb 1forms 3 noun1 •(slang, disapproving) A male fan who is obsessive about a particular subject (especially, something or someone in popular entertainment media).Apple fanboys have always devoted equal parts of their mind to genuine reasons to praise their chosen corporation, and to blindly ignoring its faults. — 2008 verb1 •(slang) To worship, support, drool over the object of affection; to be a fanboy.James has a tendency to fanboy when something he likes is done wrong. — 2013 formsfanboyed · fanboying · fanboys