Comme il faut
WordNet
adjective
(1) According with custom or propriety
"Her becoming modesty"
"Comely behavior"
"It is not comme il faut for a gentleman to be constantly asking for money"
"A decent burial"
"Seemly behavior"
WiktionaryText
Adjective
- Proper; in keeping with etiquette or social standards.
- 2007: Talking during performances is perfectly comme il faut in Wharton – why else go to a show if not to talk to one’s friends? – so while Miss Shaw, up to her bosom in dirt, went on about existence, I asked my female companion for advice. — Deborah Friedell, ‘Short Cuts’, London Review of Books 29:5