son absence

his absence

→ son
phrase Rare #33,137
his absence Can also mean 'her absence' depending on context.
FR: En son absence, la réunion a été reportée.
EN: In his absence, the meeting was postponed.

Personne ne remarqua son absence.

No one noticed his absence.

Du fait de son absence, la réunion est annulée.

Due to his absence, the meeting is cancelled.

Il donna une explication à son absence.

He gave an explanation for his absence.

En son absence, je vous écoute.

In his absence, I'm listening.

— Le Château ambulant (2004)

Ne dites pas une telle chose en son absence.

Don’t say such a thing in his absence.

Il brillait par son absence.

He was conspicuous by his absence.

Il fournit une excuse pour son absence.

He provides an excuse for his absence.

Elle m'a demandé de m'occuper de son bébé en son absence.

She asked me to look after her baby while she was away.