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Definitions

flatten

[flat-n] / ˈflæt n /
VERB
level out
Synonyms
STRONGEST
crush raze smash straighten
STRONG
abrade compress debase deflate depress fell floor flush grade ground lay plane plaster prostrate roll smooth squash subdue trample
WEAK
beat down even out iron out knock down lay low mow down spread out
Antonyms
STRONGEST
lose
STRONG
blow up erect expand incite increase lift raise uncompress
WEAK
break elevate make uneven round

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“We’re just seeing this trend flatten out,” Berner said.

From MarketWatch • Mar. 12, 2026

But she believes accent stereotypes can flatten a very rich linguistic landscape such as the one in Wales.

From BBC • Mar. 4, 2026

But that doesn’t necessarily flatten one more than the other.

From Salon • Feb. 26, 2026

Although geopolitical tensions have pushed oil prices to around $62 a barrel, U.S. crude output is expected to flatten this year as producers preserve dwindling sweet spots for better days, before declining in 2027.

From The Wall Street Journal • Feb. 17, 2026

I flatten myself against the ground and creep forward so I’m facing the mountains, peering through openings between the orange plastic barriers.

From "Internment" by Samira Ahmed