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repugn

American  
[ri-pyoon] / rɪˈpyun /

verb (used with object)

  1. to oppose or refute.


verb (used without object)

  1. Archaic. to resist.

repugn British  
/ rɪˈpjuːn /

verb

  1. archaic to oppose or conflict (with)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of repugn

1325–75; Middle English repugnen < Middle French repugner < Latin repugnāre to resist, equivalent to re- re- + pugnāre to fight