cacoethical /ˌkakəʊˈiːθɪk(ə)l/ adjective1 •Ill-conditioned, malignant; cacoethic.To lance and cleanse this Cacoethical Ulcer, to the bottom, Consider we, that the General Laws of Nature, whereby she produceth All Effects, by the Action of one and Passion of another thing, […] — 1654 formsmore cacoethical · most cacoethical