work flat out

USAGE SUMMARY

The phrase "work flat out" is correct and can be used in written English.
It means to work with maximum effort or at full capacity. Example: "Despite the tight deadline, the team worked flat out to complete the project on time."

✓ Grammatically correct

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

Police and security agencies continued to work "flat out" to protect the public, he said.

Independent

"Couriers are obviously going to work flat out to fix this," said Cotty.

The Guardian

"Two weeks is a long time in Formula One and we, and I'm sure Renault, will work flat out now to solve the problems we've been having".

Independent

After three hours of talks Ms Mowlam said the two governments would work "flat out" to overcome the impasse by March 10 when the new Northern Ireland executive must be formed.

The Guardian

Earlier this month, Goldsmiths MSc CGE joined M&C Saatchi's creatives and account managers in six teams of five people to work flat out for 48 hours to make an interactive game around the theme of "less talk, more play".

The Guardian

Mr Johnson has urged activists to work "flat out" for a Tory victory in 2015.

BBC

Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

"We are working flat out with governments around the world to come up with a solution".

The Guardian - Business

Boeing and Airbus are working flat out and have a long waiting list.

The Economist

But the Human Genome Project's laboratories are working flat out on the others.

The Economist

"People were really working flat out and wondering, how long can we can sustain it?

The Guardian

But it said it was working "flat out" to resolve the crisis.

The Guardian - Business

Expert writing Tips

Best practice

In British English, this idiom is particularly effective for striking a balance between colorful language and professional reporting.

Common error

Do not use "work flat out" as a single word (flatout) unless you are referring to the brand. Additionally, ensure the context implies high speed or effort; using it to describe someone lying down might lead to unintentional humor.

Linguistic Context

This is a verb phrase where the adverbial idiom "flat out" modifies the verb "work". In the examples from Ludwig, it consistently functions as an intensive predicate to describe a state of high-intensity labor. Ludwig AI indicates the phrase is grammatically standard and highly versatile in English usage.

Expression frequency: Uncommon

Frequent in

News & Media

80%

Formal & Business

15%

Social Media

5%

Less common in

Academia

2%

Science

1%

Encyclopedias

1%

Ludwig's WRAP-UP

The phrase "work flat out" is a robust and widely accepted idiom in the English language, used to describe laboring at one's maximum possible capacity. Analysis of the examples from Ludwig shows that it is particularly favored by high-tier news outlets like The Guardian and BBC to describe emergency services, businesses in peak seasons, and government agencies under pressure. Ludwig AI confirms the phrase is grammatically correct and versatile, appearing in past, present, and continuous forms. While it is less common in academic journals, it is a powerful tool for professional communication when you need to convey a sense of extreme effort or critical urgency without sounding overly casual.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

work around the clock

Emphasizes the duration (24/7) rather than just the intensity level.

work at full throttle

Uses a mechanical metaphor to describe operating at maximum speed.

go all out

A more general idiom that can apply to efforts beyond just work.

pull out all the stops

Focuses on using every available resource to achieve a goal.

labor tirelessly

A more formal and slightly more poetic way to describe persistent hard work.

push oneself to the limit

Focuses on the personal physical or mental exhaustion of the worker.

give one's all

More emotional and emphasizes total dedication of the self.

work like a dog

A more informal and slightly more derogatory or weary idiom.

bust a gut

Highly informal and visceral, suggesting extreme physical exertion.

toil away

Focuses on the repetitive and difficult nature of the task at hand.

FAQs

What does it mean to "work flat out"?

The phrase means to work at maximum capacity or with as much effort as possible, often under pressure. For example, if a team is facing a deadline, they might "work around the clock" or "work flat out" to finish.

Is "work flat out" formal enough for a business email?

Yes, it is common in professional contexts to describe a period of high intensity. If you prefer a more literal description, you could say the team is working "at full capacity".

What is the difference between "work flat out" and "work flat-out"?

Both are acceptable. The hyphenated version "flat-out" is often used when the phrase acts as an adjective before a noun, but in the verb form, both are widely recognized in major publications.

What can I say instead of "work flat out" in a formal report?

In formal reporting, you might prefer to use terms like "tirelessly" or phrases such as "operating at maximum efficiency" to maintain a strictly neutral tone.