All assume antonyms

verb assume

• discard — to cast aside or dispose of; get rid of: to discard an old hat.
• ignore — to refrain from noticing or recognizing: to ignore insulting remarks.
• reject — to refuse to have, take, recognize, etc.: to reject the offer of a better job.
• disregard — to pay no attention to; leave out of consideration; ignore: Disregard the footnotes.
• misunderstand — to take (words, statements, etc.) in a wrong sense; understand wrongly.
• disbelieve — to have no belief in; refuse or reject belief in: to disbelieve reports of UFO sightings.
• abstain — If you abstain from something, usually something you want to do, you deliberately do not do it.
• prove — to establish the truth or genuineness of, as by evidence or argument: to prove one's claim.
• doubt — to be uncertain about; consider questionable or unlikely; hesitate to believe.
• forget — to cease or fail to remember; be unable to recall: to forget someone's name.
• neglect — to pay no attention or too little attention to; disregard or slight: The public neglected his genius for many years.
• calculate — If you calculate a number or amount, you discover it from information that you already have, by using arithmetic, mathematics, or a special machine.
• know — to perceive or understand as fact or truth; to apprehend clearly and with certainty: I know the situation fully.
• leave — to go out of or away from, as a place: to leave the house.
• let alone — separate, apart, or isolated from others: I want to be alone.
• complete — You use complete to emphasize that something is as great in extent, degree, or amount as it possibly can be.
• conclude — If you conclude that something is true, you decide that it is true using the facts you know as a basis.
• finish — to bring (something) to an end or to completion; complete: to finish a novel; to finish breakfast.
• give — to present voluntarily and without expecting compensation; bestow: to give a birthday present to someone.
• offer — to present for acceptance or rejection; proffer: He offered me a cigarette.
• differ — to be unlike, dissimilar, or distinct in nature or qualities (often followed by from): The two writers differ greatly in their perceptions of the world. Each writer's style differs from that of another.
• oppose — to act against or provide resistance to; combat.
• reverse — opposite or contrary in position, direction, order, or character: an impression reverse to what was intended; in reverse sequence.
• release — to lease again.
• let go — to move or proceed, especially to or from something: They're going by bus.
• return — to go or come back, as to a former place, position, or state: to return from abroad; to return to public office; to return to work.