Merriam-Webster Online Dictionary
false (adjective)1.
not genuine - false documents false teeth
2.
a) intentionally untrue - false testimony
b) adjusted or made so as to deceive - false scales a trunk with a false bottom
c) intended or tending to mislead - a false promise
3.
not true - false concepts
4.
a) not faithful or loyal - treacherous a false friend
b) lacking naturalness or sincerity - false sympathy
5.
a) not essential or permanent - used of parts of a structure that are temporary or supplemental
b) fitting over a main part to strengthen it, to protect it, or to disguise its appearance - a false ceiling
6.
inaccurate in pitch - a false note
7.
a) based on mistaken ideas - false pride
b) inconsistent with the facts - a false position a false sense of security
8.
threateningly sudden or deceptive - don't make any false moves faithless
in a false or faithless manner - treacherously his friends played him false
Merriam-Webster Online Thesaurus
false (adjective)1.
not being in agreement with what is true
SYNONIMS:
erroneous, inaccurate, incorrect, inexact, invalid, off, unsound, untrue, untruthful, wrongRELATED WORDS:
counterfactual; specious, spurious; deceptive, delusive, delusory, distorted, fallacious, fictitious, illusory, misleading; amiss, askew, awry; deceitful, dishonest, fraudulent, lying, mendacious; unconfirmed, unproven, untested; fabricated, invented, made-up, trumped-upNEAR ANTONYMS:
confirmed, demonstrated, established, proven, tested; faultless, flawless, impeccable, letter-perfect, perfect2.
being such in appearance only and made with or manufactured from usually cheaper materials
SYNONIMS:
artificial, bogus, dummy, ersatz, factitious, fake, false, faux, imitative, man-made, mimic, mock, pretend, sham, simulated, substitute, syntheticRELATED WORDS:
cultured, manufactured, process; unauthentic; adulterated, designer, doctored, engineered, fudged, juggled, manipulated, tampered (with); concocted, fabricated; counterfeit, deceptive, forged, fraudulent, misleading, phony ( phoney); affected, brummagem, feigned, pinchbeck, pseudo, spuriousNEAR ANTONYMS:
authentic, bona fide, legitimate, true; premium, quality, valuable; pure, unadulterated3.
being such in appearance only and made or manufactured with the intention of committing fraud
SYNONIMS:
bogus, fake, false, forged, inauthentic, phony ( phoney), queer, sham, snide, spurious, unauthenticRELATED WORDS:
artificial, factitious, imitation, man-made, mimic, mock, simulated, substitute, synthetic; dummy, nonfunctioning, ornamental; cultured, fabricated, manufactured; deceptive, delusive, misleadingNEAR ANTONYMS:
natural; actual, true, valid4.
lacking in natural or spontaneous quality
SYNONIMS:
affected, assumed, bogus, contrived, factitious, fake, false, feigned, forced, mechanical, mock, phony ( phoney), plastic, pretended, pseudo, put-on, sham, simulated, spurious, strained, unnaturalRELATED WORDS:
automatic, canned, concocted, fabricated, hokey, labored, manufactured, pat, unauthentic, unreal, unrealistic; double-dealing, empty, facile, hollow, hypocritical, insincere, left-handed, mealy, mealymouthed, two-faced, unctuous; exaggerated, histrionic, melodramatic, overacted, overdone, theatrical ( theatric); cute, cutesy, genteel, goody-goody, mincing, overrefined, simpering; conventional, formal, impersonal, inflexible, rigid, stiff, stylized, wooden; artful, calculated, conscious, cultivated, deliberate, premeditated, studiedNEAR ANTONYMS:
authentic, bona fide, real, realistic, right, true; honest, ingenuous, sincere, unpretending; easy, effortless, smooth; extemporaneous, impromptu, impulsive, instinctive, unconscious, unprompted, unrehearsed, unstudied5.
marked by, based on, or done by the use of dishonest methods to acquire something of value
SYNONIMS:
crooked, deceitful, defrauding, dishonest, double-dealing, falseRELATED WORDS:
beguiling, deceiving, deceptive, deluding, delusive, delusory, duplicitous, fallacious, misleading, specious; spuriousNEAR ANTONYMS:
legitimate, true, valid6.
not true in one's allegiance to someone or something
SYNONIMS:
disloyal, false, fickle, inconstant, perfidious, recreant, traitorous, treacherous, unfaithful, untrueRELATED WORDS:
irresponsible, trustless, undependable, unreliable, untrustworthy; faltering, hesitant, vacillating, wavering; dubious, irresolute, uncertain; apathetic, dispassionate, uninterestedNEAR ANTONYMS:
dependable, dutiful, reliable, responsible, solid, tried, tried-and-true, trustable, trustworthy, trusty; unfaltering, unhesitating, unwavering; determined, intent, resolute; confirmed, dyed-in-the-wool, inveterate, sworn; ardent, avid, enthusiastic, fervent, fervid, impassioned, passionate7.
tending or having power to deceive
SYNONIMS:
beguiling, deceitful, deceiving, deluding, delusive, delusory, fallacious, false, misleading, speciousRELATED WORDS:
artful, crafty, cunning, devious, foxy, guileful, shady, shifty, slick, sly, sneaking, sneaky, subtile, subtle, trick, trickish, tricky, underhand, underhanded, wily; inaccurate, incorrect, wrong; bewildering, confounding, distracting, perplexing, puzzling; ambidextrous, crooked, defrauding, dishonest, dissembling, double-dealing, duplicitous, faithless, fast, fraudulent, knavish, lying, mendacious, untrustworthy, untruthful; bogus, counterfeit, fake, feigned, forged, jive [], phony ( phoney), sham, spurious; insidious, perfidious, treacherous; ambiguous, circuitous, equivocal, evasive; artificial, backhanded, hypocritical, insincere, left-handed, two-facedNEAR ANTONYMS:
candid, direct, foursquare, frank, free-spoken, open, openhearted, outspoken, plain, plainspoken, straight; clarifying, elucidative, explanatory, illuminating; revealing, revelatory; honest, trustworthy, truthful