impropriety has definitions from the fields of law,sexuality
1
[ noun ] an improper demeanor

Synonyms

improperness

Used in print

(John Michael Ray, "Rhode Island's Reactions...)

He said that the propriety or impropriety of such a gathering was a question that was to be settled by every man in accordance with the convictions of private judgments .

2
[ noun ] (law,sexuality) an indecent or improper act

Synonyms

indecency

3
[ noun ] an act of undue intimacy

Related terms

misbehavior

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