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
sustained length of time
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "sustained length of time" is correct and usable in written English.
It can be used to describe a duration that is prolonged or continuous over a period. Example: "The project required a sustained length of time to complete, which tested the team's patience and commitment."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
1 human-written examples
Prolonged snow and icy conditions resulting in slippery roads and pavements are a problem for everyone because few people are able to avoid venturing outside for any sustained length of time.
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
The week-long talks follow the release last week of fresh data from the Scripps Institution of Oceanography in San Diego that suggests for the first time in human history concentrations of carbon dioxide in the atmosphere are set to rise above 400 parts per million (ppm) for sustained lengths of time from next month.
News & Media
Which means that if the recovery is going to be sustained for any length of time, business investment has to bounce back after the many long years of stagnation, and exports have to recover.
News & Media
For situational interest to be sustained for any length of time, content knowledge and a belief in task value is required (Renninger & Hidi, 2011).
Science
We use perceived time to refer to how a person feels about time in their everyday life, whether it is that something is taking a long time to complete, or that a task cannot be sustained for any length of time.
A quick way of drawing the reader close but also hard to sustain for any length of time.
News & Media
Allegory is one of the hardest fictional conceits to sustain for any length of time; and there are inevitably points at which the characters seem to be little more than abstractions.
News & Media
Instead, the expansion was sustained for a record length of time.DC plans have their faults, as demonstrated by the collapse in December of Enron, once America's seventh-biggest company.
News & Media
In order to prevent eating foods contaminated by salmonella, which seems particularly pertinent in light of the recent outbreak, Potter explains that salmonella is killed when it is cooked at 136°F, but only when that temperature is sustained for a sufficient length of time.
News & Media
In general, a breakdown is defined when the speed decrease between two consecutive time intervals exceeds a pre-specified threshold, and this lower speed is sustained for a predefined length of time [18].
This indicates that despite limited resources in the setting virological efficacy can be sustained for a substantial length of time and also enhance immunological recovery irrespective of age.
Science
Expert writing Tips
Best practice
Use "sustained length of time" when you want to emphasize both the duration and the continuous nature of an event or activity. For example, "The study required a "sustained length of time" to observe the long-term effects."
Common error
Be mindful of using synonyms that already imply duration or continuity. For example, avoid phrases like "sustained prolonged length of time", as "prolonged" already suggests a considerable duration.
Source & Trust
86%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "sustained length of time" functions as a noun phrase that typically modifies another noun or verb, indicating the duration of an action or state. Ludwig examples show that the phrase is used to describe the duration of an event.
Frequent in
Science
38%
News & Media
38%
Formal & Business
24%
Less common in
Wiki
0%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "sustained length of time" is a grammatically correct phrase used to describe a duration that is continuous and prolonged. Ludwig examples show it's commonly found in scientific, news, and formal contexts, emphasizing the continuity and duration of an action or state. While versatile, it's important to avoid redundancy and use it judiciously. As Ludwig AI confirms, this phrase is perfectly suitable for use in various writing contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
prolonged duration
Focuses on the extended nature of the time period, emphasizing its continuation.
extended period
Highlights the protracted nature of the time frame, implying continuity.
continuous duration
Stresses the uninterrupted quality of the time period.
long-lasting period
Emphasizes the enduring quality of the time frame.
protracted time frame
Similar to "prolonged duration", but might imply a more formal or technical context.
considerable time
Indicates a significant amount of time, though not necessarily continuous.
lengthy interval
Focuses on the extended gap or space in time.
sustained interval
Highlights the uninterrupted nature of an interval of time.
long stretch of time
Emphasizes the extent or reach of the time period.
extended time span
Emphasizes that time is considered as a range.
FAQs
What does "sustained length of time" mean?
The phrase "sustained length of time" refers to a duration that is continuous or prolonged without interruption. It emphasizes both the duration and the consistency of the period.
How can I use "sustained length of time" in a sentence?
You can use "sustained length of time" to describe a period of activity or condition that persists continuously. For example: "The athlete maintained a high level of performance for a "sustained length of time".
What can I say instead of "sustained length of time"?
You can use alternatives like "prolonged duration", "extended period", or "continuous duration" depending on the context.
Is there a difference between "sustained length of time" and "prolonged period"?
While both phrases indicate an extended duration, "sustained length of time" emphasizes the continuity of the period, whereas "prolonged period" simply indicates that it is longer than usual. The first one is focused on how the time went on, the second one on the quantity of time.
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
86%
Authority and reliability
4.4/5
Expert rating
Real-world application tested