Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
prolonged period
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'prolonged period' is correct and usable in written English.
It can be used to refer to a prolonged length of time, such as a period of months or even years. For example, "The company had been in financial difficulty for a prolonged period."
✓ Grammatically correct
News & Media
Formal & Business
Science
Alternative expressions(18)
extended duration
an excessive amount of time
extended timeframe
an extended amount of time
protracted time
long-lasting interval
an unhealthy amount of time
significant timeframe
excessive hours
too much time
long haul
sustained timeframe
an immense amount of time
an unlimited amount of time
unreasonable amount of time
long time
lengthy spell
an unhealthy amount of
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
60 human-written examples
Like winning, for a prolonged period.
News & Media
A prolonged period of low prices would slow growth.
News & Media
"We need a prolonged period of cool and wet weather".
News & Media
It also needs a prolonged period of exchange rate stability.
News & Media
Liking someone for a prolonged period of time is hard.
News & Media
There was no struggle, no prolonged period of labored breathing.
News & Media
There will be a prolonged period of coexistence.
News & Media
If he is out for a prolonged period, the Lakers' playoff hopes could be severely damaged.
News & Media
For them, it will at the very least deliver a prolonged period of uncertainty.
News & Media
"We wanted to know what the cardiac activity was over a prolonged period".
News & Media
Greece faces a deep recession this year and a prolonged period of great economic difficulty.
News & Media
Expert writing Tips
Best practice
When describing trends or phenomena, use "prolonged period" to indicate that the observed pattern has persisted for a significant duration. For example: "The city experienced a "prolonged period" of economic growth."
Common error
Avoid using "prolonged period" when a simpler term like "long time" or "extended duration" would be more concise and equally effective. Overuse can make your writing sound unnecessarily verbose.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "prolonged period" functions as a noun phrase that typically acts as a subject complement, direct object, or prepositional complement. It describes the extent of time associated with a particular state, event, or condition. As Ludwig AI confirms, the phrase is grammatically correct and usable.
Frequent in
News & Media
66%
Formal & Business
17%
Science
17%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "prolonged period" is a grammatically sound and frequently used phrase that indicates a significant duration. As confirmed by Ludwig AI, it’s suitable for various contexts, especially news, business, and scientific writing. When using "prolonged period", remember to consider whether simpler alternatives like "extended duration" might be more appropriate. While it's grammatically correct, avoid overuse. Top sources like The Guardian and The New York Times frequently employ the phrase, demonstrating its reliability in authoritative contexts. Use "prolonged period" when you specifically want to emphasize that a length of time has importance or consequences.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
extended timeframe
Similar to "extended duration" but focusing on a specific, measurable timeframe.
extended duration
This alternative focuses on the length of time, emphasizing the duration aspect.
protracted time
"Protracted" directly conveys the idea of something being lengthened or extended.
lengthy spell
This option uses "spell" to denote a period, implying a continuous stretch of time.
extended phase
This term emphasizes that the "prolonged period" is a phase or stage within a larger process.
sustained timeframe
The emphasis here is on the continuous and maintained nature of the period.
long-lasting interval
This stresses the enduring nature of the period and uses a more formal term, "interval".
significant timeframe
This variation highlights the importance or impact of the period.
drawn-out stretch
This alternative highlights the extended and sometimes tedious nature of the period.
long haul
An idiomatic expression emphasizing endurance over a long duration.
FAQs
How can I use "prolonged period" in a sentence?
You can use "prolonged period" to describe an extended duration of time, such as: "The company faced a "prolonged period" of financial difficulty."
What are some alternatives to "prolonged period"?
Some alternatives include "extended duration", "lengthy spell", or "protracted time", depending on the context.
Is "prolonged period" formal or informal?
"Prolonged period" is generally considered neutral to formal and can be used in various contexts, including professional and academic writing.
What's the difference between "prolonged period" and "long time"?
"Prolonged period" suggests a more significant or impactful duration than "long time", implying that the length of time has specific consequences or importance.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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
4.6/5
Expert rating
Real-world application tested