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falsify

verb

fal·​si·​fy ˈfȯl-sə-ˌfī How to pronounce falsify (audio)
falsified; falsifying

transitive verb

1
: to prove or declare false : disprove
falsify a theory
2
: to make false: such as
a
: to make false by mutilation or addition
the accounts were falsified to conceal a theft
b
: to represent falsely : misrepresent
3
: to prove unsound by experience
falsify a promise

intransitive verb

: to tell lies : lie
falsifiable adjective
falsification noun
falsifier noun

Examples of falsify in a Sentence

He was caught falsifying financial accounts. taking that statement completely out of context essentially falsifies it, whether that's your intention or not
Recent Examples on the Web
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.
Several individuals tied to Sepehr Energy Jahan were also sanctioned for manipulating automatic identification systems, falsifying vessel markings, masking ownership, and accessing European banking channels. Amir Daftari, MSNBC Newsweek, 21 Nov. 2025 Bernard, who died in 2005, resigned in disgrace from the Metro Nashville Police Department after being accused of intimidating witnesses and falsifying reports in other cases. Keith Sharon, Nashville Tennessean, 21 Nov. 2025 Williamson, who pleaded not guilty last week, is separately accused of falsifying tax returns, lying to investigators and claiming $1 million in business deductions that prosecutors say were actually used to finance private jet travel, buy home furniture and stay at a luxury resort. Lia Russell, Sacbee.com, 18 Nov. 2025 This approach is important because conspiracy theories and disinformation often claim to falsify mainstream theories, or at least exploit a poor understanding of what certainty means in scientific methods. Calum Lister Matheson, The Conversation, 14 Nov. 2025 See All Example Sentences for falsify

Word History

Etymology

Middle English falsifien, from Middle French falsifier, from Medieval Latin falsificare, from Latin falsus

First Known Use

15th century, in the meaning defined at transitive sense 1

Time Traveler
The first known use of falsify was in the 15th century

Browse Nearby Words

Cite this Entry

“Falsify.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/falsify. Accessed 30 Nov. 2025.

Kids Definition

falsify

verb
fal·​si·​fy ˈfȯl-sə-ˌfī How to pronounce falsify (audio)
falsified; falsifying
: to make false : change so as to deceive
falsify financial accounts
falsification noun
falsifier noun

Legal Definition

falsify

transitive verb
fal·​si·​fy ˈfȯl-si-ˌfī How to pronounce falsify (audio)
falsified; falsifying
: to make false: as
a
: to make (as a document) false by mutilation, alteration, or addition
the motel clerk had falsified the recordsM. A. Kelly
b
: to report (as information) falsely
the informant falsified his testimony

More from Merriam-Webster on falsify

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