资料来源 : pyDict

放肆地

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Presumptuously \Pre*sump"tu*ous*ly\, adv.
   In a presumptuous manner; arrogantly.

资料来源 : WordNet®

presumptuously
     adv : in a presumptuous manner; "he presumptuously overstepped the
           doctor's orders"