It seems to me to show an abominable sort of conceited independence, a most country-town indifference to decorum.
Because honour, decorum, prudence, nay, interest, forbid it.
She had always seen it with pain; but respecting his abilities, and grateful for his affectionate treatment of herself, she endeavoured to forget what she could not overlook, and to banish from her thoughts that continual breach of conjugal obligation and decorum which, in exposing his wife to the contempt of her own children, was so highly reprehensible.
The possibility of Mr. Collins’s fancying herself in love with her friend had once occurred to Elizabeth within the last day or two; but that Charlotte could encourage him seemed almost as far from possibility as she could encourage him herself, and her astonishment was consequently so great as to overcome at first the bounds of decorum, and she could not help crying out: "Engaged to Mr. Collins!
There are no more uses of "decorum" in the book.
Show samples from other sources
All decorum was lost in the classroom.
She insists upon decorum and civility at her meetings.