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.

Long-end Treasury yields declined more than short-end yields, causing the curve to flatten.

From The Wall Street Journal • Apr. 15, 2026

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

From MarketWatch • Mar. 12, 2026

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

From Salon • Feb. 26, 2026

Dubois' representative Sam Jones predicted his fighter would "flatten" Ipswich's Wardley in quick time.

From BBC • Feb. 25, 2026

I flatten the sheet against the table and read the rickety letters.

From "Mockingjay" by Suzanne Collins