flat-out

1 of 2

adjective

1
: being or going at maximum effort or speed
2
: out-and-out, downright
it was a flat-out lie

flat out

2 of 2

adverb

1
: in a blunt and direct manner : openly
called flat out for revolutionNat'l Review
2
: at top speed or peak performance
the car does 180 m.p.h. flat out
3
usually flat-out : absolutely, downright
usually used as an intensive
is just flat-out confusing

Examples of flat-out in a Sentence

Adjective regarded their son-in-law as a flat-out loser and let him know it Adverb I told him flat out that I have no intention of marrying him. We asked for more time but they refused us flat out. The car does 180 mph flat out.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Darnold’s been flat-out terrific, and one of the main reasons the Vikings have won nine straight. Zak Keefer, The Athletic, 30 Dec. 2024 There is a difference between a challenging endgame and one that is just flat-out annoying for its own sake in terms of its punishment and looting. Paul Tassi, Forbes, 28 Dec. 2024
Adverb
In an effort to turn a quick profit, some studios will underspend in a film’s campaign, or flat out fail in reaching an audience, thus sending a film into homes at a rapid rate. Anthony D'alessandro, Deadline, 31 Dec. 2024 The outlook for Russia’s defense capacity will also depend on whether its economy is running flat out and the defense sector has already maximized production or if there is still room for production to increase as new and refurbished plants and facilities come online. Andrea Kendall-Taylor, Foreign Affairs, 18 Dec. 2024 See all Example Sentences for flat-out 

Word History

First Known Use

Adjective

1906, in the meaning defined at sense 1

Adverb

1932, in the meaning defined at sense 1

Time Traveler
The first known use of flat-out was in 1906

Dictionary Entries Near flat-out

Cite this Entry

“Flat-out.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flat-out. Accessed 8 Jan. 2025.

Last Updated: - Updated example sentences
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