frowningly

from WordNet (r) 3.0 (2006)
frowningly
    adv 1: with a frown; while frowning; "he looked at her
           frowningly"
    
from The Collaborative International Dictionary of English v.0.48
Frowningly \Frown"ing*ly\, adv.
   In a frowning manner.
   [1913 Webster]
    

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