not true or correct; erroneous

a false statement.

uttering or declaring what is untrue

a false witness.

not faithful or loyal; treacherous

a false friend.

tending to deceive or mislead; deceptive

a false impression.

not genuine; counterfeit.

based on mistaken, erroneous, or inconsistent impressions, ideas, or facts

false pride.

used as a substitute or supplement, esp. temporarily

false supports for a bridge.

Biology . having a superficial resemblance to something that properly bears the name

the false acacia.

not properly, accurately, or honestly made, done, or adjusted

a false balance.

inaccurate in pitch, as a musical note.

dishonestly; faithlessly; treacherously

Did he speak false against me?

play someone false

to betray someone; be treacherous or faithless.

adjective

accurate , actual , correct , factual , genuine , known , precise , real , right , substantiated , true , valid , honest , just , reliable , straight , truthful

adjective

apocryphal , beguiling , bogus , casuistic , concocted , contrary to fact , cooked-up , counterfactual , deceitful , deceiving , delusive , dishonest , distorted , erroneous , ersatz * , fake , fallacious , fanciful , faulty , fictitious , fishy , fraudulent , illusive , imaginary , improper , inaccurate , incorrect , inexact , invalid , lying , mendacious , misleading , misrepresentative , mistaken , off the mark , phony , sham , sophistical , specious , spurious , trumped up * , unfounded , unreal , unsound , untrue , untruthfulnotes:fallacious means intended to deceive; fallible means liable to make a mistake or to be inaccurate or erroneous; false means not in accordance with the fact or reality or actuality , or deliberately deceptive , or not genuine or real , apostate , base , canting , corrupt , crooked , deceptive , deluding , devious , dishonorable , disloyal , double-dealing * , duplicitous , faithless , falsehearted , forsworn , foul , malevolent , malicious , mean , mythomaniac , perfidious , perjured , rascally , recreant , renegade , scoundrelly , traitorous , treacherous , treasonable , two-faced * , underhanded , unfaithful , unscrupulous , untrustworthy , venal , villainous , wickednotes:fallacious means intended to deceive; fallible means liable to make a mistake or to be inaccurate or erroneous; false means not in accordance with the fact or reality or actuality , adulterated , alloyed , artificial , assumed , bent , bogus * , brummagem , bum * , colored , contrived , copied , crock * , disguised , fabricated , factitious , feigned , fishy * , forged , framed * , hollow , imitation , made-up , make-believe , manufactured , meretricious , mock , ostensible , pretended , pseudo * , seeming , shady , sham * , simulated , snide , so-called * , substitute , synthetic , wrongnotes:fallacious means intended to deceive; fallible means liable to make a mistake or to be inaccurate or erroneous; false means not in accordance with the fact or reality or actuality , truthless , untruthful , wrong , off , illogical , sophistic , suppositious , supposititious , false-hearted , arrant , barmecidal , counterfeit , delusional , disaffected , disingenuous , fictive , groundless , guise , hypocritical , ignominious , illusional , illusory , inauthentic , infamous , insincere , make believe , mythical , not so , paradoxical , perjurious , postiche , pseudo , pseudological , spectral , trumped-up , unauthentic , untenable , unveracious