to thou (to address (someone) using the informal second-person pronoun tu rather than the formal vous)
regularauxiliary: avoir
Conjugate tutoyer in French. Present: je tutoie, tu tutoies, il/elle/on tutoie. Passé composé: j’ai tutoyé. Past participle: tutoyé. Auxiliary: avoir. Pronunciation and examples available.
Je tutoie le serveur du café en l'appelant par son prénom.
I call the waiter at the cafe by calling him by his first name.
J’ai tutoyé le voisin en l'appelant par son prénom ce matin.
I called the neighbor by calling him by his first name this morning.
Je tutoyais la voisine en l'appelant par son prénom dans l'ascenseur.
I called the neighbor by calling her by her first name in the elevator.
Je tutoierai le serveur en l'appelant par son prénom au prochain déjeuner.
I will call the waiter by calling him by his first name at the next lunch.