je ne sais quoi

listen to the pronunciation of je ne sais quoi
English - English
An intangible quality that makes something distinctive or attractive

She has a certain je ne sais quoi about her.

An indescribable something; as "There was a je ne sais quoi about him which made us dislike him at first sight "
(zheh neh SAY KWAH) Literally "I know not what" - denotes something indescribable
a good quality that you cannot easily describe - often humorous
je ne sais quois
something indescribable