from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A quality or attribute that is difficult to describe or express: "Fishing has lacked a certain je ne sais quoi in terms of its public image, as all activities must that involve beer, worms and one-size-fits-all gimme caps” ( Charles Leerhsen).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An intangible quality that makes something distinctive or attractive.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. something indescribable
French : je, I + ne, not + sais : first person present indicative of savoir, to know + quoi, what.(American Heritage® Dictionary of the English Language, Fourth Edition)
From French je ne sais quoi, literally ‘I don't know what’. (Wiktionary)