Definition of falsenext
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as in fraudulent
marked by, based on, or done by the use of dishonest methods to acquire something of value false advertising that claimed that the vegetables were organically grown when they weren't

Synonyms & Similar Words

Antonyms & Near Antonyms

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Synonym Chooser

How is the word false different from other adjectives like it?

Some common synonyms of false are disloyal, faithless, perfidious, traitorous, and treacherous. While all these words mean "untrue to what should command one's fidelity or allegiance," false stresses the fact of failing to be true in any manner ranging from fickleness to cold treachery.

betrayed by false friends

When is disloyal a more appropriate choice than false?

Although the words disloyal and false have much in common, disloyal implies a lack of complete faithfulness to a friend, cause, leader, or country.

disloyal to their country

When is it sensible to use faithless instead of false?

The words faithless and false can be used in similar contexts, but faithless applies to any failure to keep a promise or pledge or any breach of allegiance or loyalty.

faithless allies

How are the words perfidious and faithless related as synonyms of false?

Perfidious adds to faithless the implication of an incapacity for fidelity or reliability.

a perfidious double-crosser

Where would traitorous be a reasonable alternative to false?

In some situations, the words traitorous and false are roughly equivalent. However, traitorous implies either actual treason or a serious betrayal of trust.

traitorous acts punishable by death

When can treacherous be used instead of false?

The synonyms treacherous and false are sometimes interchangeable, but treacherous implies readiness to betray trust or confidence.

a treacherous adviser

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of false They are charged with crimes including making false statements on a naturalization application and submitting fraudulent voter registrations. — Arkansas Online, 20 Oct. 2026 In regulated work, the gap between a miss and a false certainty is enormous, and a single accuracy number hides it. — Murali Rajendran, Forbes.com, 20 Oct. 2026 Adams, usually so conciliatory, plainly voices her disgust with the unethical Mexican clinic which gave McQueen false hope, and side-eyes his late-in-life turn to Christianity. — Hadley Hall Meares, Vanity Fair, 20 Oct. 2026 Both claims were true enough to be useful and false enough to be imperial. — Niall Ferguson, Foreign Affairs, 20 Oct. 2026 See All Example Sentences for false
Recent Examples of Synonyms for false
Adjective
  • Bisignano, a former Wall Street CEO who has been overhauling how the agency operates, also said SSA was working to fix erroneous records.
    — Fernanda Tronco, Fortune, 20 Oct. 2026
  • In his own review of the case, Mandell failed to flag an erroneous jury instruction that four years later would lead to the conviction being overturned.
    — Samantha Melamed, ProPublica, 13 Oct. 2026
Adjective
  • Her nose was also dotted with the faux freckles that were scattered across the bridge.
    — Kaleigh Werner, Footwear News, 19 Oct. 2026
  • Zebra tablecloths and napkins completed the safari theme, and the walls were decorated with faux magazine covers of Bradfield and his partner, auctioneer William Featherby.
    — Richard Johnson, New York Daily News, 18 Oct. 2026
Adjective
  • The Indianapolis seizure follows other recent interceptions of counterfeit watches.
    — Alexandra Harrell, Footwear News, 16 Oct. 2026
  • There was a modest 5% rise in counterfeit sports cards, yet a 125% increase in fake Pokémon cards.
    — Bob Woods, CNBC, 10 Oct. 2026
Adjective
  • Instead, the beleaguered quarterback continues to slide down mock draft boards as the season matures.
    — Austin Perry OutKick, FOXNews.com, 17 Oct. 2026
  • Testing sensors on canisters During the INL demonstration, researchers installed optical fibers outside a mock nuclear fuel canister and tested several arrangements to measure acoustic vibrations.
    — Neetika Walter, Interesting Engineering, 16 Oct. 2026
Adjective
  • Federal authorities said her husband and several other individuals stole millions of dollars from the casino by creating fraudulent credit vouchers.
    — Sergio Candido, CBS News, 22 Oct. 2026
  • Malek also faces charges for allegedly submitting fraudulent Paycheck Protection Program (PPP) loan applications in 2021.
    — Louis Casiano, FOXNews.com, 22 Oct. 2026
Adjective
  • Telemachus’ lone contribution is killing Melanthius, the traitorous Ithacan farmhand, thus preventing him from continuing to arm the suitors.
    — Marlow Stern, Variety, 17 July 2026
  • And at the very center of Hell is Satan himself, the traitorous Archangel Lucifer, depicted as a monstrous creature with wings and three heads.
    — Keith Cooper, Space.com, 11 May 2026
Adjective
  • Meta argued the state failed to prove misleading statements about privacy and that content moderation actually harmed New Mexicans.
    — ABC News, ABC News, 21 Oct. 2026
  • Meta argued that New Mexico failed to prove that the tech giant's executives made misleading statements about privacy and that its content moderation practices harmed state residents.
    — Aimee Picchi, CBS News, 21 Oct. 2026
Adjective
  • Medical identity theft can lead to fraudulent bills and inaccurate patient records, so catching problems early is important.
    — Kurt Knutsson, FOXNews.com, 18 Oct. 2026
  • Working with fellow researchers, Cade now has a good reason to believe the Nature report is more than likely inaccurate – the train’s rail route didn’t exist until 1846.
    — Mike McRae October 15, New Atlas, 16 Oct. 2026

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Cite this Entry

“False.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/false. Accessed 26 Oct. 2026.

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