falsifier

from WordNet (r) 3.0 (2006)
falsifier
    n 1: someone who falsifies
    
from The Collaborative International Dictionary of English v.0.48
Falsifier \Fal"si*fi`er\, n.
   One who falsifies, or gives to a thing a deceptive
   appearance; a liar.
   [1913 Webster]
    

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