The Collaborative International Dictionary of English v.0.48:
Propriety \Pro*pri"e*ty\, n.; pl. Proprieties. [F.
propri['e]t['e], L. proprietas, fr. proprius one's own,
proper. See Property, Proper.]
1. Individual right to hold property; ownership by personal
title; property. [Obs.] "Onles this propriety be exiled."
--Robynson (More's Utopia).
So are the proprieties of a wife to be disposed of
by her lord, and yet all are for her provisions, it
being a part of his need to refresh and supply hers.
2. That which is proper or peculiar; an inherent property or
quality; peculiarity. [Obs.] --Bacon.
We find no mention hereof in ancient zoographers, .
. . who seldom forget proprieties of such a nature.
3. The quality or state of being proper; suitableness to an
acknowledged or correct standard or rule; consonance with
established principles, rules, or customs; fitness;
appropriateness; as, propriety of behavior, language,
manners, etc. "The rule of propriety," --Locke.
Moby Thesaurus II by Grady Ward, 1.0:
37 Moby Thesaurus words for "proprieties":
amenities, civilities, civility, comity, convention, courtliness,
decencies, decorum, dictates of society, diplomatic code, elegance,
elegancies, etiquette, exquisite manners, formalities, good form,
good manners, manners, mores, natural politeness,
point of etiquette, politeness, politesse, protocol, punctilio,
quiet good manners, rules of conduct, social code, social conduct,
social graces, social procedures, social usage, the conventions,
the mores, the proprieties, the right things, what is done