être d'avis - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

• IPA^(key): /ɛ.tʁə d‿a.vi/

être d’avis

1. (adverbial) to be of the opinion that; to think that, to opine that

• Followed by a subordinate clause introduced by que, or by an infinitive clause introduced by de.

• de l’avis de