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je ne sais quoi

je ne sais quoi
je ne sais quoi

Definition

An appealing quality that is hard to describe precisely.

From French je ne sais quoi.

Merriam-Webster records circa 1656 for this headword. The date refers to the dictionary’s recorded sense, which may differ from the meaning illustrated here. See the dictionary entry.

Example of use

The little café had a certain je ne sais quoi.

Historical attestation

circa 1656

https://www.merriam-webster.com/dictionary/je%20ne%20sais%20quoi

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