1. In a manner that attempts to impress by affecting greater importance, talent, or knowledge than is actually possessed
He spoke pretentiously about art, using terms he didn't fully understand.
Ele falava pretensiosamente sobre arte, usando termos que não compreendia totalmente.
2. In an ostentatious or showy manner; with affected superiority
She dressed pretentiously for the casual dinner party.
Ela se vestiu pretensiosamente para a reunião casual de jantar.