addict, nut, freak, junkie, junky -- (someone who is so ardently devoted to something that it resembles an addiction; "a golf addict"; "a car nut"; "a bodybuilding freak"; "a news junkie")
addict -- (someone who is physiologically dependent on a substance; abrupt deprivation of the substance produces withdrawal symptoms)
Overview of verb addict
The verb addict has 1 sense
addict, hook -- (to cause (someone or oneself) to become dependent (on something, especially a narcotic drug))