Annul meaning

ə-nŭl'
To make or declare void or invalid, as a marriage or a law; nullify.
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To do away with; put an end to.
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To cancel, make ineffective, invalidate, nullify, void.
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To judicially declare something to be void either from the date of decree or ab initio.
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To make an ecclesiastical or judicial declaration that a marriage is void ab initio and never existed. See also divorce.
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To formally revoke the validity of.
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To dissolve (a marital union) on the grounds that it is not valid.
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The definition of annul means to do away with, make null and void or reduce to nothing.

An example of annul is to invalidate a marriage.

verb
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To bring to an end the effect or existence of; cancel out.
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To make no longer binding under the law; invalidate; cancel.
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Origin of annul

  • Middle English annullen from Old French annuller from Late Latin annullāre Latin ad- ad- Latin nullus none ne in Indo-European roots
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Old French anuller, from Latin annullō (“annihilate, annul”), from ad (“to”) + nūllus (“none, not any”).
    From Wiktionary