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
a lengthy span
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a lengthy span" is correct and usable in written English.
It can be used to describe a long duration or period of time, often in contexts related to timeframes or distances. Example: "The project took a lengthy span of two years to complete, far longer than we initially anticipated."
✓ Grammatically correct
News & Media
Science
Alternative expressions(18)
an extended duration
a prolonged period
a considerable time
a long stretch
a significant duration
a sizeable period
a protracted time frame
a long timeframe
an extended period
a long duration
a long while
for ages
a protracted interval
such a long time
a significant amount of time
in the distant past
a considerable duration
a far more lengthy span
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
3 human-written examples
The silent chef must follow a few simple, yet unforgiving, rules: any busy, attention-demanding work has to happen before baby's bedtime; recipes must easily tolerate a lengthy span between prep and finish, ideally resting at room temperature to lessen the mess and effort involved in refrigerating and reheating; and the final steps, after baby's bedtime, have to be both quiet and fairly routine.
News & Media
It inspires, clarifies and focuses the work of individuals and preferably entire organizations for a lengthy span of time.
News & Media
Ischemic heart disease may develop over a lengthy span of time and is often associated with left ventricular (LV) remodeling.
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
As Mr. Mehta made clear, the Thruway Authority's interests are best served by a smooth flow over its lengthy span -- and for that, having a tow truck on the spot and ready to go is a small price to pay.
News & Media
Not every book with a lengthy time span should be taken so seriously.
News & Media
The book, like Tom Stewart in his 80's, can count a lengthy time span as its greatest achievement.
News & Media
Those ahead of their game – and both Jacobs and Prada are fashion frontrunners par excellence – are far from famed for a lengthy attention span, after all.
News & Media
However, such a neat and clean periodization should be taken with several grains of salt, since intricate continuities and discontinuities not conforming to this early-middle-late schema are to be found across the entire lengthy span of Lacan's teachings.
Science
Despite the lengthy span of Ebola's first-ever appearance in the three countries, there may be ways to look at the last two years with an optimistic spin.
News & Media
Current evidence, derived from research efforts by many investigators over a lengthy time-span, increasingly implies that mutated htt adversely influences Bcl-2 family protein levels and localization.
Science
The investigation was lengthy, spanning both the 105th and 106th Congresses, and according to a Democratic report had cost over $7.4 million as of August 31 , 1998 making it the most expensive Congressional investigation ever (the Senate Watergate investigation cost $7 million in 1998 dollars).
Wiki
Expert writing Tips
Best practice
When using "a lengthy span", ensure the context clearly indicates what is being measured, whether it's time, distance, or another quantifiable metric. For example, "a lengthy span of years" or "a lengthy span of the river."
Common error
While "a lengthy span" is grammatically sound, it can sound overly formal in casual conversation. Consider using simpler alternatives like "a long time" or "a long period" in informal settings.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a lengthy span" primarily functions as an adjective phrase modifying a noun, typically referring to a period of time or a distance. Ludwig's examples show its use in describing durations of projects or the extent of geographic features.
Frequent in
News & Media
60%
Science
30%
Wiki
10%
Less common in
Encyclopedias
0%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "a lengthy span" is a grammatically correct way to describe an extended duration or distance. Ludwig shows that it's most commonly found in news articles and scientific publications. Although correct, be mindful of the tone, as it can sound somewhat formal in casual conversations. When you want to emphasize the scale of time or space, "a lengthy span" is appropriate. Consider alternatives like "an extended duration" or "a prolonged period" depending on the context. As confirmed by Ludwig's AI, the expression is perfectly valid. You can use it when writing or speaking.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an extended duration
Emphasizes the duration aspect, using 'extended' instead of 'lengthy'.
a prolonged period
Focuses on the period of time, substituting 'lengthy' with 'prolonged'.
a considerable time
Highlights the significance of the time involved, using 'considerable' to convey the length.
a long stretch
Uses 'stretch' to emphasize the continuous nature of the duration.
a significant duration
Similar to 'considerable time', but uses 'significant' to denote importance and length.
an extensive interval
Replaces 'span' with 'interval', focusing on the distance between two points in time.
a drawn-out phase
Emphasizes the gradual and often tedious nature of the duration.
a sizeable period
Uses 'sizeable' to indicate the magnitude of the duration.
a protracted time frame
Replaces both 'lengthy' and 'span' with 'protracted' and 'time frame', respectively, conveying a formal tone.
a long timeframe
Simplifies the phrase to its most basic elements, using 'long' and 'timeframe'.
FAQs
How can I use "a lengthy span" in a sentence?
You can use "a lengthy span" to describe a long period of time or a significant distance. For example, "The project took "a lengthy span" to complete" or "The bridge covers "a lengthy span" across the river."
What are some alternatives to "a lengthy span"?
Alternatives include "an extended duration", "a prolonged period", or "a considerable time". The best choice depends on the specific context.
Is it appropriate to use "a lengthy span" in formal writing?
Yes, "a lengthy span" is suitable for formal writing. It conveys a sense of duration or distance in a clear and professional manner, depending on the context where is used.
What's the difference between "a lengthy span" and "a long time"?
While both phrases refer to duration, "a lengthy span" often implies a more continuous or measurable period. "A long time" is more general and can refer to a subjective perception of duration, depending on the context where is used. You can say something like "a prolonged period".
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested