Non obstante
Notwithstanding; in opposition to, or in spite of, what has been stated, or is to be stated or admitted.
A clause in old English statutes and letters patent, importing a license from the crown to do a thing notwithstanding any statute to the contrary. This dispensing power was abolished by the Bill of Rights.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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Non Obstante
Engl. law. These words, which literally signify notwithstanding, are used to express the act of the English king by which he dispenses with the law, that is, authorizes its violation.
He cannot by his license or dispensation make an offence dispunishable which is malum in se; but in certain matters which are mala prohibita, be may, to certain persons and on special occasions, grant a non obstante.
This entry contains material from Bouvier's Legal Dictionary, a work published in the 1850's.