single, unmarried
Is she single?
Il est resté célibataire jusqu'à la fin de ses jours.
He remained single until the end of his days.
Elle est toujours célibataire.
She is still single.
Mary est une mère célibataire.
Mary is a single mother.
Is he still single?
Il est resté célibataire toute sa vie.
He remained single all his life.