Definition of "properness" [prop•er•ness]

• Excellence, quality. (noun)
• The state or condition of being proper; propriety. (noun)
• The state or condition of being proper (of a proper fraction, proper subset, etc.). (noun)

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• "Carole McDonnell 7:54 pm: Christianity defined as properness"
• "Anyway, I appreciate the properness of your introduction of the song because it IS "S-S-S-Saturday.""
• "The Victorian era was known of a time of prim properness, where ladies were ladies and men acted like gentlemen."