a person who is addicted to a particular substance, typically an illegal drug (尤指毒品)上瘾者 ■[with modifier](informal)an enthusiastic devotee of a specified thing or activity (非正式)入迷的人 a self-confessed chocolate addict. 自认不讳的巧克力瘾君子。
语源
early 20th cent.: from the obsolete verb addict, which was a back-formation from addicted