flat out

[flat-out] / ˈflætˈaʊt /

ADVERB

at top speed

Synonyms

WEAK

all out at full speed at full throttle bluntly directly full-bore openly peak performance wide open

flat-out

ADVERB

at top speed

Synonyms

WEAK

all the way all-out at a good clip for all one's worth full blast head over heels in full gallop lickety-split the whole nine yards to the max unrestrainedly wide open without reservation

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.

Jacobson says they have computers now working flat out generating brackets for this year’s competition.

From MarketWatch • Mar. 18, 2026

One academic asked me flat out, if I loved Iran so much, why was I badmouthing it?

From The Wall Street Journal • Feb. 27, 2026

Gordon said bad weather can leave farmers "flat out" to get everything done.

From BBC • Feb. 26, 2026

“Man, he can flat out run,” Jones said.

From Los Angeles Times • Feb. 4, 2026

Gregor felt himself lifted into the air as Ripred ran flat out for the far side of the river.

From "Gregor the Overlander" by Suzanne Collins