Ethical is defined as moral or conforming to standards of conduct.
Individual codes of ethics are commonly seen as those unwritten rules of behavior instilled in an individual by their upbringing and environment.
Examples of societal ethical codes can include such things as:
See ethical in Webster's New World College Dictionary
Origin: ME ethik (< L ethicus < Gr ēthikos < ēthos, character, custom < IE base *swedh-, essential quality, own character > Goth swes, L suus, one's own & suescere, to become accustomed) + -al
See ethical in American Heritage Dictionary 4
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