FALSE Synonyms: 317 Similar and Opposite Words

Q: 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

Q: 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

Q: 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

Q: 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

Q: 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

Q: 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

false

adjective

ˈfȯls

Definition of false next

as in erroneous

not being in agreement with what is true early reports about the explosion contained much false information

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in faux

being such in appearance only and made with or manufactured from usually cheaper materials George Washington's false teeth were not made of wood but of elephant ivory and cow's teeth

Synonyms & Similar Words

Antonyms & Near Antonyms

as in counterfeit

being such in appearance only and made or manufactured with the intention of committing fraud arrested for selling false ID cards to teenagers

Synonyms & Similar Words

Antonyms & Near Antonyms

as in mock

lacking in natural or spontaneous quality so much of the sympathy that the widow received was false and hypocritical, since it came from people who never liked her husband in the first place

Synonyms & Similar Words

Antonyms & Near Antonyms

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

as in traitorous

not true in one's allegiance to someone or something false friends who deserted the prizefighter when all his money was gone

Synonyms & Similar Words

Antonyms & Near Antonyms

as in misleading

tending or having power to deceive it turned out that the con man had made false promises of marriage to a dozen women

Synonyms & Similar Words

Antonyms & Near Antonyms

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 This piggybacking of false claims atop true ones is a stock disinformation tactic. —

Gary Baum, HollywoodReporter, 11 Feb. 2026 The editorial also suggested cracking down on false medical claims. —

Melissa Rudy, FOXNews.com, 11 Feb. 2026 Because this new criterion is just a bit easier to satisfy than zero knowledge, Ilango could build protocols that don’t need the parties to interact and that prevent the prover from being able to convince with false answers. —

Peter Hall, Scientific American, 11 Feb. 2026 Bad news for Yasiel Puig Former Dodger Yasiel Puig was found guilty Friday of obstruction of justice and making false statements to investigators. —

Assistant Sports Editor, Los Angeles Times, 11 Feb. 2026 See All Example Sentences for false

Recent Examples of Synonyms for false

Adjective

Cubs and White Sox pitchers and catchers are working out in Arizona at the start of spring training, but unless Sox general manager Chris Getz says something erroneous again, nothing much is expected to happen until the Cactus League schedule begins Friday.

— Paul Sullivan, Chicago Tribune, 15 Feb. 2026
Congress foolishly downsized that number in the 1980s and ’90s on the erroneous belief that more doctors would encourage unnecessary health care consumption.

— Betsy McCaughey, Boston Herald, 8 Feb. 2026

Definition of erroneous

Browse Nearby Words

fall (to)

false

falsehood

See all Nearby Words

Cite this Entry

Style

“False.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/false. Accessed 18 Feb. 2026.

Copy Citation

Last Updated: 18 Feb 2026 - Updated example sentences

Synonyms of false

adjective

Synonym Chooser

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

Goldilocks

Popular in Grammar & Usage

More Words You Always Have to Look Up

'Buck naked' or 'butt naked'?

What does 'etcetera' mean?

Is that lie 'bald-faced' or 'bold-faced'?

The Difference Between 'i.e.' and 'e.g.'

Popular in Wordplay

16 Glee-ridden Words from Schitt's Creek

Did Orange the Fruit or the Color Come First?

Why Is the Letter ‘Z’ Associated With Sleeping?

The Words of the Week - Feb. 13

Why do we call it 'ides of March'?

Popular

More Words You Always Have to Look Up

16 Glee-ridden Words from Schitt's Creek

Did Orange the Fruit or the Color Come First?

Games & Quizzes