morbs noun[plural only]3 •(no longer used) Physical or mental illness or infirmity.For in veracity these Times denote Morbs to the Sane, and Obits to th' Aegrote; And alterate the suavest Pulchritude To the Complection of its native Mud. — 1653 •(informal, no longer used) A state of melancholy, sadness, ennui.‘Oh Tess,’ giggled Kate, ‘you’re always such a tonic. I’m so glad you’ve come. I’ve got a severe case of the “morbs”.’ — 1995 •(informal, no longer used) One who suffers from melancholia or depression.