Depressive means to do with long-lasting lowness of spirits. A depressive illness, depressive episode, depressive symptoms.
It is the clinical adjective and belongs to diagnosis rather than to mood: a depressive episode has a defined length and a defined set of signs. As a noun it names a person, though that use now sounds dated and unkind.
1adjectivedepressiveTo do with long-lasting lowness of spirits.
“After losing his job, he went through a long depressive period.”
depressive is a quality.
French depressif comes from Latin deprimere, to press down.
Medieval Latin
depressivus
French
dépressif
English, today
depressive
From French dépressif or Medieval Latin depressivus. by surface analysis, depress + -ive.
Etymology from Wiktionary, CC BY-SA