someone who is physiologically dependent on a substance; abrupt deprivation of the substance produces withdrawal symptomsある物質に生理的に依存している人中毒者
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"中毒症状に見えるほど熱烈に傾倒する人中毒者