I. | ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective
Etymology: International Scientific Vocabulary manic + depressive; originally formed as German manisch-depressiv
: relating to, characterized by, or exhibiting features similar to manic-depressive psychosis
II. noun
: a manic-depressive individual