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

When flat out, a maximum of 250kw, in what is known in F1 jargon as 'super-clipping'.

From BBC • Mar. 17, 2026

He added that he could not give MPs a publication date, saying: "We are working flat out to agree the plan with everyone across government."

From BBC • Mar. 17, 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

If Don Hume had the guts to row this race, they’d agreed, the rest of them just flat out weren’t going to let him down.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

flat out

Example Sentences

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