flat·​ten | \ ˈfla-tᵊn How to pronounce flatten (audio) \
flattened; flattening\ ˈflat-​niŋ How to pronounce flatten (audio) , ˈfla-​tə-​ \

Definition of flatten

transitive verb

: to make flat: such as
a : to make level or smooth
b : to knock down also : to defeat decisively
c : to make dull or uninspired often used with out
d : to make lusterless flatten paint
e : to stabilize especially at a lower level

intransitive verb

: to become flat or flatter: such as
a : to become dull or spiritless
b : to extend in or into a flat position or form
c : to become uniform or stabilized often at a new lower level usually used with out

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Other Words from flatten

flattener \ ˈflat-​nər How to pronounce flatten (audio) , ˈfla-​tə-​ \ noun

Synonyms & Antonyms for flatten



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Examples of flatten in a Sentence

Dozens of houses were flattened by the tornado. The boxer was flattened in the seventh round. The team got flattened in the first round of the play-offs. Prices are expected to flatten after the holiday shopping season.
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Recent Examples on the Web Rumors ahead of Apple’s September event suggested that Apple would flatten the sides of the Apple Watch Series 7, following in the footsteps of the MacBook Pro, iPad, and iPhone. Jacob Siegal, BGR, 12 Oct. 2021 Use a rolling pin to gently flatten the candle's middle. Sarah Martens, Better Homes & Gardens, 7 Oct. 2021 The owners behind Cocineros want to flatten the hierarchy of their kitchen, and the first way to do so was to eliminate the term chef. Washington Post, 4 Oct. 2021 Razer’s Raptor, while not receiving the best overall reviews, has at least appeared to address this seemingly blatant issue by allowing users to flatten out the display like a table, which exposes all the under-panel ports for easy access. Mitch Wallace, Forbes, 1 Oct. 2021 They can be tuned to step gently forward or flatten your eyeballs. Derek Powell, Car and Driver, 29 Sep. 2021 There’s a long tradition in Hollywood of actors changing their names and getting plastic surgery to flatten their ethnic identities out of existence. Sarah Seltzer, Time, 24 Sep. 2021 There was a summer surge, fueled in large part by the Delta variant, but the curve has begun to flatten in many parts of the state, which now has the lowest coronavirus case rate in the nation. Los Angeles Times, 24 Sep. 2021 Separately, an independent analysis of big cities finds at least one promising sign that the murder rate may be starting to flatten this year: The increase in murders this summer does not appear to be as large as the record spike last summer. New York Times, 22 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'flatten.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of flatten

1630, in the meaning defined at transitive sense

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Time Traveler for flatten

Time Traveler

The first known use of flatten was in 1630

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Dictionary Entries Near flatten

flat tax


flattened-strand rope

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Statistics for flatten

Last Updated

27 Oct 2021

Cite this Entry

“Flatten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flatten. Accessed 28 Oct. 2021.

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More Definitions for flatten



English Language Learners Definition of flatten

: to make (something) flat or flatter
: to become flat or flatter
: to knock down (something or someone)


flat·​ten | \ ˈfla-tən How to pronounce flatten (audio) \
flattened; flattening

Kids Definition of flatten

: to make or become flat She flattened herself against the wall.

More from Merriam-Webster on flatten

Nglish: Translation of flatten for Spanish Speakers

Britannica English: Translation of flatten for Arabic Speakers


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