Propriety is the quality of being appropriate, suitable or following the proper custom.(noun)
An example of propriety is returning the rsvp card in response to a wedding invitation.
See propriety in Webster's New World College Dictionary
noun pl. proprieties
Origin: ME propriete < OFr proprieté: see property
See propriety in American Heritage Dictionary 4
noun pl. pro·pri·e·ties
Origin: Middle English propriete, particular character, ownership
Origin: , from Old French; see property.
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