from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Being in accord with conventions or accepted standards; proper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Proper; in keeping with etiquette or social standards.
from The Century Dictionary and Cyclopedia
- As it should be; according to the rules of good society; genteel; proper: a French phrase often used in English.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. according with custom or propriety
French : comme, as + il faut, it is necessary, proper.(American Heritage® Dictionary of the English Language, Fourth Edition)
Borrowing from French comme il faut ‘as it should be’. (Wiktionary)