drug of abuse
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|Noun||1.||drug of abuse - a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction|
amphetamine, pep pill, upper, speed - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
drug - a substance that is used as a medicine or narcotic
gateway drug - a habit-forming drug that is not addictive but its use may lead to the use of other addictive drugs; "one college athlete recently called beer a gateway drug for young people"
soft drug - a drug of abuse that is considered relatively mild and not likely to cause addiction