Top definition
A soft drug is a psychoactive substance that is less addictive or dangerous than the so-called 'hard drugs'. Usually with these drugs its impossible to overdose unless you're a real f*cking moron and addiction potential tends to be much less than something like crystal meth.
Examples of soft drugs include alcohol, marijuana, caffeine, nicotine, and shrooms.
by ugspuggle March 22, 2010
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