je ne sais quoi

Borrowed from French je ne sais quoi (literally “I don't know what”).

• (UK) IPA^(key): /ˌʒə nə seɪ ˈkwɑː/
• (US) IPA^(key): /ˌʒə nə seɪ ˈkwɑ/^[1]
• (emulating French) IPA^(key): /ˌʒə n(ə) sɛ ˈkwɑː/
• Rhymes: -ɑː

je ne sais quoi (uncountable)

1. An indefinable quality that makes something distinctive or attractive.

   She has a certain je ne sais quoi about her.

   • 1894, George du Maurier, “Part Second”, in Trilby: A Novel, New York, N.Y.: Harper & Brothers, →OCLC, page 85:

     "Say, you others, I find that the Englishman has something of truly distinguished in the voice, something of sympathetic, of touching—something of je ne sais quoi!" Bouchardy: "Yes, yes—something of je ne sais quoi! That's the very phrase— […] "

• je-ne-sais-quoi

Literally, “I don't know what”.

• IPA^(key): /ʒə n(ə) sɛ kwa/

• Audio:

  (file)

• Rhymes: -a

je ne sais quoi m (plural je ne sais quoi)

1. a certain something, je ne sais quoi (intangible quality that makes something distinctive)

   Synonyms: Dieu sait quoi (literally “God knows what”), on ne sait quoi (literally “one doesn't know what”)

   • 1987, Michel Berger (lyrics and music), “Ella, elle l'a”, in Babacar, performed by France Gall:

     Si tu l’as, tu l’as, Ella elle l’a / Ce je ne sais quoi / Que d’autres n’ont pas

     If you have it, you have it, Ella she has it. This I don't know what. That the others don't have.

• je ne sais pas