(v. t.) To refuse to allow; to deny the force or validity of; to disown and reject; as, the judge disallowed the executor's charge.

abjure assert the contrary ban bar be unmoved be unwilling beg off belie blackball categorically reject contest contradict contravene controvert counter cross debar decline decline to accept default deny disaffirm disagree disapprove disapprove of disavow disclaim disfavor dishonor disown disprove dispute dissent dissent from embargo enjoin exclude exclude from forbid forswear frown at frown down frown upon gainsay grimace at hold out against impugn inhibit interdict join issue upon keep back levant look askance at look black upon negate negative not accept not admit not approve not buy not consent not go for not hear of not hold with not pay not think of nullify object object to oppose ostracize outlaw preclude prevent prohibit proscribe protest recant refuse refuse consent refuse to admit refuse to pay refute reject renounce repress repudiate resist entreaty resist persuasion retract revoke rule out say nay say no say no to shut out stand aloof stop payment suppress taboo take back take exception to take issue with think ill of think little of thumb down turn down view with disfavor vote nay vote negatively welsh withhold