arrogantly
  (ad.)自大地;傲慢地
  Ar·ro·gant·ly, adv. In an arrogant manner; with undue pride or self-importance.
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  arrogantly
       adv : in an arrogant manner; "in the old days she had been harsh
             and stiff ; afraid of her husband and yet arrogantly
             proud that she had a husband strong and fierce enough
             to make her afraid"