Translation of "Spry" in French

Nothing keeps a man as spry as a young woman and old enemies.

Rien ne tient un homme aussi vigoureux qu'une jeune femme et de vieux ennemis.

- Mrs. Klein is already in her eighties, but she's still very spry.
- Mrs Klein is over 80, but she's still very active.

Madame Klein a plus de 80 ans, mais elle est encore très active.