Oppugn \Op*pugn"\, v. t. [imp. & p. p. {Oppugned}; p. pr. & vb.
n. {Oppugning}.] [OF. oppugner, L. oppugnare; ob (see {Ob-})
+ pugnare to fight. See {Impugn}.]
To fight against; to attack; to be in conflict with; to
oppose; to resist.
[1913 Webster]
They said the manner of their impeachment they could
not but conceive did oppugn the rights of Parliament.
--Clarendon.
[1913 Webster]