self-opinionated

US /ˌself.əˈpɪn.jə.neɪ.tɪd/
UK /ˌself.əˈpɪn.jə.neɪ.tɪd/
"self-opinionated" picture
1.

自以為是, 固執己見, 武斷

having a high opinion of oneself or one's own opinions; conceited or dogmatic

:
His self-opinionated remarks often alienated his colleagues.
自以為是的言論常常疏遠了他的同事。
She was too self-opinionated to consider other viewpoints.
她太自以為是了,不願考慮其他觀點。