both his/her parents
Ses deux parents sont médecins.
Both of his parents are doctors.
Sinon, Britt aura perdu ses deux parents.
Otherwise, Britt will have lost both her parents.
— Reconnu coupable (2026)
She lost both her parents.
Both of his parents are dead.
Ses deux parents ont été tués par une maladie.
Both of her parents were killed by an illness.
— Don Juan DeMarco (1994)
Tom a perdu ses deux parents.
Tom lost both his parents.