我わが物もの顔がお

na-adjective, noun

acting like one owns the place; behaving as if one were the owner

Describes a person's arrogant, entitled attitude, often in a shared or public space. Used with ～のようだ, ～に振る舞う, or as a な-adjective modifying nouns like 態度 (attitude).

• 彼かれは会かい議ぎ室しつで我わが物もの顔がおに振ふる舞まっ