ethic
Concise Oxford English Dictionary © 2008 Oxford University Press:
ethic /ˈɛθɪk/
▶noun a set of moral principles: the puritan ethic.
– origin ME: from OFr. éthique, from L. ethice, from Gk (hē) ēthikē (tekhnē) ‘(the science of) morals’, based on ēthos (see ethos).
'ethic' also found in these Oxford entries:

