manic depressive illness manic-depressive • manic-depressive psychosis · · · Info · Definitions · Synonyms · Characters · · manic depressive illness · · Text Common · · Latin · · Scripts 24 · · Length 7 · · Syllables Definitions · · · (noun) a mental disorder characterized by episodes of mania and depression. Synonyms: bipolar disorder, manic depression, manic depressive illness, manic-depressive psychosis. · · Noun Definition 1 Synonyms · · · bipolar disorder · · Synonym 1 manic depression · · Synonym 2 manic-depressive psychosis · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 v latin small letter v U+0076