flatten

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

Keep scrolling for more

Other Words from flatten

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

Synonyms & Antonyms for flatten

Synonyms

even, level, plane, smooth, smoothen

Antonyms

rough, roughen

Visit the Thesaurus for More 

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.
See More

Recent Examples on the Web

In tiny Mexico Beach, which was virtually flattened, three residents remained unaccounted for, police said Monday, down from about 30. Alex Leary, WSJ, "Trump Visits Hurricane-Torn Florida, Georgia," 15 Oct. 2018 Spread the mixture evenly onto the prepared baking sheets, flattening it with the back of a spatula. Blake Bakkila, Health.com, "3 Easy Summer Campfire Recipes Your Entire Family Will Enjoy," 22 June 2018 The department store and the museum gallery flattened social hierarchies, as those present in each respective space participated in one singular activity: consumption. Courtney Coffman, The Atlantic, "Shops Aren’t for Shopping Anymore," 19 June 2018 During the initial impact, shock waves flattened trees in massive waves within a radius of nearly 1,000 miles. Ashley Strickland, CNN, "These were the unlikely survivors after dinosaurs went extinct," 24 May 2018 Nwora, who is six inches taller and about 30 pounds heavier than Perry, flattened him, clattering him to the floor. Jeff Greer, The Courier-Journal, "Louisville has a blossoming bench mob, and Darius Perry is the leader," 29 Jan. 2018 Growth in the price of hotel room rates is also starting to flatten. Keiko Morris, WSJ, "Slowing Hotel Growth Could be Worst in 10 Years," 12 Feb. 2019 Several even noted that these washcloths get fluffier after the first wash and stay appropriately fluffy over time, which is definitely great news since a lot of washcloths tend to flatten out and get less soft with use. Brittney Morgan, House Beautiful, "3,000 People Swear By These 66 Cent Amazon Washcloths," 9 Aug. 2018 Courtesy Judd Foundation Unlike Hans Hofmann, who famously used color and texture in paint to create the illusion of depth, Judd sought to flatten the surface. Siobhan Morrissey, miamiherald, "These paintings are rarely shown. You can see them in Miami's Design District. | Miami Herald," 17 May 2018

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.

See More

First Known Use of flatten

1630, in the meaning defined at transitive sense

Keep scrolling for more

Learn More about flatten

Statistics for flatten

Last Updated

16 May 2019

Look-up Popularity

Time Traveler for flatten

The first known use of flatten was in 1630

See more words from the same year

Keep scrolling for more

More Definitions for flatten

flatten

verb

English Language Learners Definition of flatten

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

flatten

verb
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.

Keep scrolling for more

More from Merriam-Webster on flatten

Rhyming Dictionary: Words that rhyme with flatten

Thesaurus: All synonyms and antonyms for flatten

Spanish Central: Translation of flatten

Nglish: Translation of flatten for Spanish Speakers

Britannica English: Translation of flatten for Arabic Speakers

Comments on flatten

What made you want to look up flatten? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to make a payment or contribution

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!