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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
flat out
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "flat out" is correct and usable in written English.
It is typically used to emphasize that something is done completely or without reservation, often in the context of stating a fact or opinion. Example: "He was flat out wrong about the project's timeline."
✓ Grammatically correct
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
29 human-written examples
Marnie flat out failed.
News & Media
We're running flat out".
News & Media
That is flat out wrong.
News & Media
Flat out, I don't want to".
News & Media
Bodies flat out, the jockeys' minds whirr.
News & Media
("Rockford" was comedy flat out).
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
It's flat-out illegal.
News & Media
"Flat-out tough".
News & Media
But flat-out irresponsible.
News & Media
"They flat-out outplayed us".
News & Media
They flat-out denied involvement.
News & Media
Expert writing Tips
Best practice
Use "flat out" to add emphasis when you want to express something directly and without hesitation, but be mindful of its informal tone. It's effective in casual conversation or news articles to convey strong feelings or opinions.
Common error
Avoid using "flat out" in highly formal documents or academic papers where a more neutral or precise term like "completely" or "absolutely" would be more appropriate. It can make your writing sound less professional.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "flat out" primarily functions as an adverb, modifying verbs or adjectives to intensify their meaning. As Ludwig AI suggests, it often emphasizes the completeness or directness of an action or state.
Frequent in
News & Media
82%
Wiki
9%
Formal & Business
4%
Less common in
Academia
2%
Science
2%
Reference
1%
Ludwig's WRAP-UP
In summary, "flat out" is an adverbial phrase used to emphasize that something is done completely, directly, or without reservation. While Ludwig AI confirms its grammatical correctness, it's important to note that its usage is more appropriate in informal or journalistic contexts rather than formal or academic writing. Its communicative purpose is to add emphasis and certainty, making statements more forceful. Common alternatives include "completely", "absolutely", and "totally". The phrase frequently appears in news and media sources, but is far less common in other areas like academic or scientific publications.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
completely
Emphasizes totality or absence of exceptions, less idiomatic than "flat out".
absolutely
Similar to completely but can also convey emphasis or agreement, and is less informal.
totally
Conveys completeness or being without exception, and is often used in informal contexts.
outright
Implies directness or lack of subtlety, and has a slightly more formal tone.
unequivocally
Stresses the absence of ambiguity or doubt; more formal and emphatic.
categorically
Similar to unequivocally, but implies a firm, clear declaration, and has a formal tone.
expressly
Conveys explicit and direct statement of something, used more in formal settings.
point blank
Indicates a direct and blunt manner, often in response to something, and is generally less formal.
without reservation
Highlights the absence of doubts or conditions, and is more formal and verbose.
in no uncertain terms
Emphasizes clarity and firmness in communication, and is slightly more emphatic.
FAQs
How can I use "flat out" in a sentence?
You can use "flat out" to emphasize a statement or action. For example, "He was "flat out wrong" about the calculations", or "She "flat out refused" to participate".
What can I say instead of "flat out"?
You can use alternatives like "completely", "absolutely", or "totally" depending on the context. Each alternative provides a slightly different nuance, but all can effectively replace "flat out".
Is "flat out" appropriate for formal writing?
While "flat out" is widely understood, it's generally better suited for informal or journalistic writing. Formal contexts may benefit from using alternatives such as "completely" or "absolutely" for a more professional tone.
What's the difference between "flat out" and "completely"?
"Flat out" carries a more emphatic and sometimes informal tone, while "completely" is more neutral and suitable for a wider range of contexts. "Flat out" also often implies a lack of hesitation or reservation, whereas "completely" simply indicates the totality of something.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested