Definition:
"Je ne sais quoi" is a French phrase that means "I don't know what." In English, it is used to describe a quality or charm that is difficult to describe or explain. It refers to something special or unique about a person, place, or thing that makes it attractive or interesting, but you can’t quite put your finger on why.
In more sophisticated contexts, you might say: - "The film lacked a je ne sais quoi that could have elevated it to a classic."
While "je ne sais quoi" primarily refers to an indescribable quality, it can sometimes be used humorously or sarcastically to point out something that is not impressive but is being overhyped.
In summary, "je ne sais quoi" is a lovely way to express an enticing quality that is hard to define.