Wordnet 3.0
ADJECTIVE (1)
1. 
 according with custom or propriety; 
- Example: "her becoming modesty"- Example: "comely behavior"- Example: "it is not comme il faut for a gentleman to be constantly asking for money"- Example: "a decent burial"- Example: "seemly behavior"[syn: becoming, comely, comme il faut, decent, decorous, seemly]
WordNet (r) 3.0 (2006):
comme il faut
    adj 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" [syn: becoming, comely,
           comme il faut, decent, decorous, seemly]