moribund \MOR-uh-bund\, adjective: 1. In a dying state; dying; at the point of death. 2. Becoming obsolete or inactive. He put on a beaver overcoat, a present from a wealthy Petrograd banker and speculator, Ignati Porfiryevich Manus, whose niece had been moribund with fever until Rasputin's healing... Sign in to see full entry.