centenaire

a hundred years old, a century old

cent hundred + enaire having a specified number of years
adjective · singular Rare #49,065
a hundred years old, a century old For a person, it can mean that they are 100 years old.
FR: Cette maison est centenaire.
EN: This house is a hundred years old.

L'élection est une tradition plus que centenaire.

The election is a tradition that is more than a century old.

— Election 1 (2005)

Protégez-vous de la chaleur et vous serez centenaire aussi.

Protect yourself from the heat and you'll live to be a hundred too.

— Do the Right Thing (1989)

J'ai brisé sa magie centenaire.

I broke its century-old magic.

— Histoires de fantômes chinois (1987)

Vous vivrez centenaire.

You will live to be a hundred.

— Garçon d'honneur (1993)