(US) a gullible person, who will believe whatever they are told; thus make a believer (out of), to convince.
|Story Omnibus (1966) 220: I picked the sawn-off shotgun out of its nest. ‘Can I borrow this? I want to make a believer out of a guy.’.‘Corkscrew’|
|After Hours 251: Kleinfeld’s tanned hide would make believers of all the other corrupt bastards.|
|Pimp’s Rap 191: Now make them counterfeit niggers a believer.|