cavalierly

from WordNet (r) 3.0 (2006)
cavalierly
    adv 1: in a proud and domineering manner; "he treated his staff
           cavalierly" [syn: {disdainfully}, {cavalierly}]
    
from The Collaborative International Dictionary of English v.0.48
Cavalierly \Cav`a*lier"ly\, adv.
   In a supercilious, disdainful, or haughty manner; arrogantly.
   --Junius.
   [1913 Webster]
    

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