Oppugn

v. t.

1.

To fight against; to attack; to be in conflict with; to oppose; to resist. [imp. & p. p. Oppugned ; p. pr. & vb. n. Oppugning.] They said the manner of their impeachment they could not but conceive did oppugn the rights of Parliament. - Clarendon.

Verb

1.

oppugn - challenge the accuracy, probity, or propriety of; "We must question your judgment in this matter" Synonyms: call into question, question

antagonize, battle, be antipathetic, be at cross-purposes, be contrary to, be inimical, be opposed to, beat against, belie, call into question, challenge, clash, collide, conflict, conflict with, confute, contest, contradict, contrapose, contrast with, contravene, controvert, counter, counteract, counterattack, counterbalance, countercheck, counterpoise, counterpose, countervail, counterwork, cross, deny, fight, gainsay, go against, go counter to, interfere with, juxtapose in opposition, lock horns, meet head-on, militate against, negate, offset, oppose, play at cross-purposes, rebut, reject, resist, run against, run counter to, set off, swim upstream, traverse, tug, war, work against