drug abuse drug • drug addict · · · Info · Definitions · Synonyms · Characters · · drug abuse · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) excessive use of drugs. Synonyms: substance abuse, drug abuse, habit. · · Noun Definition 1 Synonyms · · · substance abuse · · Synonym 1 habit · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075