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Definitions

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

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

"But as soon as my babies arrived, I realised I just couldn't – I was flat out looking after the three of them so I went for the easy option."

From BBC • Mar. 12, 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

One woman who came trying to sell us her handmade baskets looked in our door and spied our scissors and asked right flat out if she could have them!

From "The Poisonwood Bible" by Barbara Kingsolver

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