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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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it proved costly

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "it proved costly" is correct and usable in written English.
You can use it to indicate that something resulted in significant expenses or negative consequences after the fact. Example: "The decision to invest in that failing project proved costly for the company."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

31 human-written examples

It proved costly.

It proved costly as Posh found an equaliser.

Pietersen chose to go for his spinners and it proved costly.

News & Media

Independent

It proved costly as Arsenal doubled their lead on 42 minutes.

News & Media

Independent

Mr. Chandler decided to testify on his own behalf, and it proved costly.

News & Media

The New York Times

Woodson, who had used 10 or 11 players in games this season to limit their minutes, played only eight in his rotation Wednesday, and it proved costly.

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Human-verified similar examples from authoritative sources

Similar Expressions

29 human-written examples

The Toulon-bound player's interjection may have been instinct, but it still proved costly.

News & Media

Independent

It has proved costly and difficult to build pipelines from gas fields in western China, while liquefied natural gas for transport in ships is in short supply.

News & Media

The New York Times

Although the U.S. generally supports the group-aid idea, it has proved costly to some U.S. companies.

News & Media

Forbes

But their early indiscipline gave Warrington a significant territorial advantage in the opening stages and it eventually proved costly as the Bulls were penalised near their own line, allowing Wolves scrum-half Myler to score the game's first try.

News & Media

BBC

But the Dodgers could never add any separation, allowing the Padres to hang around until it finally proved costly.

News & Media

Los Angeles Times
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Expert writing Tips

Best practice

Use "it proved costly" to succinctly convey that a past action or decision had negative consequences. This phrase is particularly effective when emphasizing the contrast between initial expectations and the eventual outcome.

Common error

Avoid using "it proved costly" when discussing potential or hypothetical scenarios. This phrase is best suited for describing events that have already occurred and demonstrably resulted in negative consequences.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

86%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "it proved costly" functions as a conclusive statement, highlighting the negative outcome or consequences that followed a particular action or decision. Ludwig AI confirms this through numerous examples where the phrase is used to denote an action's detrimental aftermath.

Expression frequency: Common

Frequent in

News & Media

87%

Formal & Business

7%

Academia

3%

Less common in

Science

2%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "it proved costly" is a common and grammatically correct way to describe that a past action or decision had significant negative consequences. As evidenced by Ludwig AI, it's frequently used in news and media to report on events where decisions resulted in undesirable outcomes. The phrase maintains a neutral tone and is appropriate for formal writing. When using "it proved costly", ensure the context clearly indicates a past event with demonstrable negative results. Alternatives like "it turned out to be expensive" or "it had dire consequences" can be used for slight variations in meaning.

FAQs

How can I use "it proved costly" in a sentence?

You can use "it proved costly" to describe a past decision or action that resulted in negative consequences. For example, "The company's decision to delay the marketing campaign "it proved costly" as competitors gained market share".

What are some alternatives to "it proved costly"?

Alternatives include "it turned out to be expensive", "it ended up being a burden", or "it had dire consequences" depending on the specific context.

Is it appropriate to use "it proved costly" in formal writing?

Yes, "it proved costly" is suitable for formal writing, particularly in news reports, analytical essays, and business documents. It conveys a clear and concise message about negative outcomes.

What is the difference between "it proved costly" and "it was expensive"?

"It was expensive" simply states a high cost, while "it proved costly" implies that something initially seemed acceptable but later resulted in negative or unforeseen expenses or consequences. The first focuses on an expected cost while the second focuses on an unexpected negative outcome.

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Source & Trust

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Authority and reliability

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Real-world application tested

Most frequent sentences: