əˈpyün verb
( -ed/-ing/-s )
Etymology: Middle English oppugnen, from Latin oppugnare, from ob- + pugnare to fight — more at pugnacious
transitive verb
1.
a. : to fight against
b. obsolete : withstand
2. : to call in question : challenge the accuracy, propriety, probity, or other quality of : controvert
intransitive verb
: stand in opposition : contend