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

1.
engreído, dogmático, obstinado
having a high opinion of oneself or one's own opinions; conceited or dogmatic
:
•
His self-opinionated remarks often alienated his colleagues.
Sus comentarios engreídos a menudo alienaban a sus colegas.
•
She was too self-opinionated to consider other viewpoints.
Era demasiado engreída para considerar otros puntos de vista.