самонадеянно

Нареч. conceitedly, presumptuously, perkily самонадеянн|о — conceitedly, presumptuously, perkily; ~ость ж. conceit, presumption; ~ый conceited, presumptuous, self-assertive, bumptious.

Источник: Полный русско-английский словарь на Gufo.me