1.adjectiveProper; 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"