What is the meaning of Propriety?

The particular character or essence of someone or something; individuality.

A characteristic; an attribute.

A piece of land owned by someone; someone's property.

More generally, something owned by someone; a possession.

The fact of possessing something; ownership.

Correct language or pronunciation.

Suitability, fitness; the quality of being appropriate.

Correctness in behaviour and morals; good manners, seemliness.

Source: wiktionary.org