Depressive/dɪˈpresɪv/ Definition 1 of 2Pro Tip 1/3Medical Context Used in medical or psychological discussions to describe sadness linked to illness. After her diagnosis, she began treatment for depressive symptoms. Pro Tip 2/3Not Always Rational Depressive feelings can lack an obvious cause or reason, unlike typical sadness. Even on his birthday, he felt an unexplained depressive mood. Pro Tip 3/3Professional Diagnosis A professional, like a psychologist, usually diagnoses depressive disorders. The therapist confirmed she was going through a depressive episode.