overweeningly

/ˌoʊvərˈwiːnɪŋli/
adverb
  1. In an excessively proud or arrogant manner.
    • She overweeningly dismissed the suggestions of her teammates.
    • He spoke overweeningly about his achievements, boring everyone at the party.
    • The CEO overweeningly assumed his company would never fail.
Antonyms
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