son opinion

his/her opinion

→ son
phrase Uncommon #22,536
his/her opinion “Son” can mean “his” or “her”; it agrees with the feminine noun “opinion,” not with the person who holds it.
FR: Elle a partagé son opinion avec la classe.
EN: She shared her opinion with the class.

Son opinion ne vaut rien.

His opinion is worthless.

Son opinion ajoute un éclairage nouveau à la question.

His opinion adds new light to the question.

Chaque étudiant a exprimé son opinion.

Each student expressed their opinion.

Son opinion a une certaine importance.

His opinion has some importance.

C'était son opinion personnelle.

That was his personal opinion.

Je partage son opinion politique.

I share his political opinion.

Ou même d'exprimer son opinion.

Or even to express one’s opinion.

— Agora (2009)

Dans mon métier, il n'est pas facile d'avoir son opinion.

In my line of work, it’s not easy to have an opinion of your own.

— L'ironie du sort, ou profitez de votre bain ! (1976)

Je partage son opinion.

I share his opinion.

Il m'impose toujours son opinion.

He always imposes his opinion on me.

C'est son opinion.

That's his opinion.

Elle a toujours cédé à son opinion.

She always gave in to his opinion.

Il persiste dans son opinion.

He persists in his opinion.

Il s'accroche encore à son opinion.

He still clings to his opinion.

Je faisais juste écho à son opinion.

I was just echoing his opinion.

Chacun avait son opinion sur les mobiles de Cecilia.

Everyone had their own opinion about Cecilia's motives.

Le témoin est un expert et la Cour veut avoir son opinion.

The witness is an expert, and the Court wants to hear his opinion.

— Des hommes d'honneur (1992)