Not in conformity with fact; expressing or comprising what is contrary to fact or truth; erroneous; untrue: as, a false report; a false accusation; a false opinion.Giving utterance to what is not true; untruthful; mendacious: as, a false witness.Perfidious; treacherous; unfaithful; inconstant; disloyal; dishonest; unjust: said of persons.Containing or conveying deception, falsehood, or treachery; adapted or intended to mislead: said of things.Irregular; not according to rule or usage: as, false syntax or quantity.Not genuine; being other than it appears to be; not real; made in imitation, or to serve the purpose of the genuine articlewith intent to defraud or deceive; spurious: as, false coin;for the sake of mere appearance or for use or convenience; artificial: as, a false buttonhole; false teeth.Technically, in botany and zoology, having some superficial resemblance to some other plant or animal: used like the Latin quasi-, or Greek pseudo-, in composition. See quasi-, pseudo-.In music, not in tune; inaccurate in pitch; singing or playing out of tune.In heraldry, open or voided: said of some bearings: as, a false cross; a false roundel (an annulet); a false escutcheon (a bordure, or sometimes an orle).In fortification, an artificial mound or bank of earth forming part of a fortification.n. A falsehood; that which is false.Falsely.—To play false, to play one falseTo mislead by falsehood; deceive; betray.To defeat; balk; evade.To violate by want of veracity; falsify.To render false, treacherous, or dishonest.To feign, as a blow; aim by way of a feint.To be false; deceive; practise deceit.Additional; assistant; subsidiary; supplementary; temporary; used to supplement or temporarily displace something: as, the false work or supports for a bridge which is under construction.