his/her guilt
Il n'y a pas de place pour le doute quant à sa culpabilité.
There is no room for doubt as to his guilt.
Avez-vous des preuves de sa culpabilité ?
Do you have any evidence of his guilt?
He confessed his guilt.
Le voleur a reconnu sa culpabilité.
The thief admitted his guilt.
Il était inconscient de sa culpabilité.
He was unaware of his guilt.
Il considère que la preuve de sa culpabilité n'a pas été apportée.
He believes that his guilt has not been proven.
— Léviathan (2014)
Pardon, la question de sa culpabilité est sortie comme ça.
Sorry, the question of his guilt just came up like that.
— Decision to Leave (2022)
Sa culpabilité ne laisse aucun doute.
His guilt leaves no doubt.