de longue date

long-standing

→ de
phrase Rare #45,855
long-standing Describes someone or something that has existed, continued, or been known for a long time. It can often be translated as “longtime” when describing a person or relationship.
FR: C'est un partenaire de longue date de notre entreprise.
EN: He is a longtime partner of our company.

Il s'agit d'un problème de longue date.

This is a longstanding problem.

Un homme d'une haute intelligence, je le connais de longue date.

A man of great intelligence, I have known him for a long time.

— Guerre et Paix (1968)

Non, mais avec un rabais client de longue date.

No, but with a long-standing customer discount.

— Roma (2018)

Alexandre Loukachenko est le dirigeant de longue date de la Biélorussie.

Alexander Lukashenko is the long-time leader of Belarus.