‖Cac′o‐ë″thes (?), n. [L., fr. Gr. �������� of ill habits, �� �������� an ill habit; κακόσ bad + � habit] 1. A bad custom or habit; an insatiable desire; as, cacoëthes scribendi, “The itch for writing”. Addison.
2. (Med.) A bad quality or disposition in a disease; an incurable ulcer.