plural of manner
A set of moral norms or customs derived from generally accepted practices rather than written laws.
‘Political correctness is tyranny with manners. ― Charlton Heston’;
Customs; habits; esp., moral customs conformity to which is more or less obligatory; customary law.
‘he has the manners of a pig’;
(sociology) the conventions that embody the fundamental values of a group
Mores ( sometimes ; from Latin mōrēs, [ˈmoːreːs], plural form of singular mōs, meaning 'manner, custom, usage, or habit') are social norms that are widely observed within a particular society or culture. Mores determine what is considered morally acceptable or unacceptable within any given culture.