1.  contradict(v = verb.stative) belie, negate - be in contradiction with;
is one way to depart, deviate, diverge, vary
Derived forms adjective contradictory₄, adjective contradictory₃, adjective contradictory₂, adjective contradictory₁
Sample sentences: Something ----s something

2.  contradict(v = verb.communication) contravene, negate - deny the truth of;
is one way to differ, disagree, dissent, take issue
Derived forms noun contradiction₃, adjective contradictory₄, adjective contradictory₁
Sample sentences: Somebody ----s something

3.  contradict(v = verb.communication) controvert, oppose - be resistant to; "The board opposed his motion"
is one way to rebut, refute
Sample sentences: Somebody ----s something

4.  contradict(v = verb.cognition) negate - prove negative; show to be false;
is one way to demonstrate, establish, prove, shew, show
Sample sentences: Somebody ----s something; Something ----s something; Somebody ----s that CLAUSE

1.  To assert the contrary of; to oppose in words; to take issue with; to gainsay; to deny the truth of, as of a statement or a speaker; to impugn. [1913 Webster]
"Dear Duff, I prithee, contradict thyself,
And say it is not so." [1913 Webster]
"The future can not contradict the past." [1913 Webster]

2.  To be contrary to; to oppose; to resist. [1913 Webster]
"No truth can contradict another truth." [1913 Webster]
"A greater power than we can contradict
Hath thwarted our intents." [1913 Webster]

   To oppose in words; to gainsay; to deny, or assert the contrary of, something. [1913 Webster]
"They . . . spake against those things which were spoken by Paul, contradicting and blaspheming." [1913 Webster]

contradict, v.tr.
1 deny or express the opposite of (a statement).
2 deny or express the opposite of a statement made by (a person).
3 be in opposition to or in conflict with (new evidence contradicted our theory).

Derivative:
contradictor n.

Etymology:
L contradicere contradict- (as CONTRA-, dicere say)

VB  be contrary, contrast with, oppose, diller toto coelo, invert, reverse, turn the tables, turn topsy-turvy, turn end for end, turn upside down, turn inside out, contradict, contravene, antagonize.

VB  oppose, counteract, run counter to, withstand, control, hinder, antagonize, oppugn, fly in the face of, go dead against, kick against, fall afoul of, run afoul of, set against, pit against, face, confront, cope with, make a stand, make a dead set against, set oneself against, set one's face against, protest against, vote against, raise one's voice against, disfavor, turn one's back upon, set at naught, slap in the face, slam the door in one's face, be at cross purposes, play at cross purposes, counterwork, countermine, thwart, overthwart, work against, undermine, stem, breast, encounter, stem the tide, breast the tide, stem the current, stem the flood, buffet the waves, beat up against, make head against, grapple with, kick against the pricks, contend, do battle with, do battle against, contradict, contravene, belie, go against, run against, beat against, militate against, come in conflict with, emulate, rival, spoil one's trade.

VB  countervail, oppose, mitigate against, rebut, subvert, cheek, weaken, contravene, contradict, tell the other side of the story, tell another story, turn the scale, alter the case, turn the tables, cut both ways, prove a negative, audire alteram partem.

VB  dissent, demur, call in question, differ in opinion, disagree, say no, refuse assent, refuse to admit, cavil, protest, raise one's voice against, repudiate, contradict, have no notion of, differ toto caelo, revolt at, revolt from the idea, shake the head, shrug the shoulders, look askance, look askant, secede, recant.

VB  deny, contradict, contravene, controvert, give denial to, gainsay, negative, shake the head, disown, disaffirm, disclaim, disavow, recant, revoke, dispute, impugn, traverse, rebut, join issue upon, bring in question, call in question, give the lie in his throat, give one the lie in his throat, deny flatly, deny peremptorily, deny emphatically, deny absolutely, deny wholly, deny entirely, give the lie to, belie, repudiate, set aside, ignore, rebut, qualify, refuse, recuse.