morbus UK /ˈmɔːbəs/US /ˈmɔɹbəs/ noun1 •(formal) A disease.I thought he were took with the Morbus one day, I did with his nasty angle! For “oh dear,” says he, and burst out in a cry, “oh my gut is all got of a tangle!” — 1838 formsmorbi · morbuses