un-american

from WordNet (r) 3.0 (2006)
un-American
    adj 1: considered contrary to the best interests of the United
           States
    
from The Collaborative International Dictionary of English v.0.48
Un-American \Un-American\
   See {-American}.
    
from The Devil's Dictionary (1881-1906)
UN-AMERICAN, adj.  Wicked, intolerable, heathenish.
    

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