Meaning

adjective of or relating to the philosophical study of ethics

adjective conforming to accepted standards of social or professional behavior; ; ; ; ; - Omar N. Bradley

adjective adhering to ethical and moral principles

originFrom ethic + -al, from Late Latin ethicus (“moral, ethical”), from Ancient Greek ἠθικός (ēthikós, “of or for morals, moral, expressing character”), from ἦθος (êthos, “character, moral nature”).

Etymology from Wiktionary, CC BY-SA 3.0