flatten

verb

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

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

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.
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.
Importantly for the exhibitor that has been fighting through high debt since Covid flattened the sector, generated more than $200 million of cash from operating activities and approximately $114 million in free cash flow — its highest quarterly cash flow post pandemic. Jill Goldsmith, Deadline, 25 Feb. 2025 Following the breach, a surge in withdrawals was seen but this later flattened. Tom Rogers, Newsweek, 22 Feb. 2025 One was the dot-com collapse, which flattened the bubbly frivolity of early e-commerce. Gideon Lewis-Kraus, The New Yorker, 19 Feb. 2025 Communities also need to plan their responses in the event that a disaster flattens their neighborhood. Alice Hill, Foreign Affairs, 14 Feb. 2025 See All Example Sentences for flatten

Word History

First Known Use

1630, in the meaning defined at transitive sense

Time Traveler
The first known use of flatten was in 1630

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Cite this Entry

“Flatten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flatten. Accessed 3 Mar. 2025.

Kids Definition

flatten

verb
flat·​ten ˈflat-ᵊn How to pronounce flatten (audio)
flattened; flattening ˈflat-niŋ How to pronounce flatten (audio)
-ᵊn-iŋ
: to make or become flat

More from Merriam-Webster on flatten

Last Updated: - Updated example sentences
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