trenchantly

from WordNet (r) 3.0 (2006)
trenchantly
    adv 1: in a vigorous and effective manner; "he defended his
           client's civil rights trenchantly"
    
from The Collaborative International Dictionary of English v.0.48
Trenchantly \Trench"ant*ly\, adv.
   In a trenchant, or sharp, manner; sharply; severely.
   [1913 Webster]
    

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