conformity to established standards of good or proper behavior or manners.

appropriateness to the purpose or circumstances; suitability.

rightness or justness.

the proprieties, the conventional standards of proper behavior; manners

to observe the proprieties.

Obsolete . a property.

Obsolete . a peculiarity or characteristic of something.

noun

immorality , impropriety , inappropriateness , unsuitableness , wrong , bad manners , misbehavior , misconduct

noun

accordance , advisability , agreeableness , appositeness , aptness , becomingness , compatibility , concord , congruity , consonance , convenience , correctness , correspondence , decorum , ethicality , expedience , fitness , harmony , justice , legitimacy , meetness , morality , order , pleasantness , properness , recommendability , rectitude , respectability , rightness , seemliness , suitability , accepted conduct , amenities , breeding , civilities , courtesy , decency , delicacy , dignity , etiquette , good behavior , good form , modesty , mores * , niceties , politeness , politesse , protocol , punctilio , refinement , rules of conduct , social conventions , social grace , the done thing , comeliness , decentness , decorousness , respectableness , ethicalness , righteousness , rightfulness , mores , p\'s and q\'s , civility , pleasantry , amenity , appropriateness , attribute , behavior , code , conduct , convenance , conventionality , correctitude , customs , grace , manners , pertinence , pertinency , relevance , relevancy , rigorism , rule , scrupulosity , urbanity