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
maintained for
Grammar usage guide and real-world examplesUSAGE SUMMARY
"maintained for" is a valid and commonly used phrase in written English.
For example, you could say: "The records were carefully maintained for a period of several years."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(8)
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
The improvement was maintained for six months.
News & Media
These conditions were maintained for several days.
Orientation was maintained for each ACL.
Science
These prices will be maintained for some time.
News & Media
A balance that Iraq's ruthless dictator had maintained for years.
News & Media
Projection will be maintained for two weeks, and then abandoned.
News & Media
Each temperature step is maintained for 30 min.
Science & Research
A single tempo and metre are maintained for each section.
Encyclopedias
Separate subaccounts shall be maintained for each of the above.
Academia
(3) which related to plans maintained for benefit of employees.
Academia
Eartag records must be maintained for 5 years.
Academia
Expert writing Tips
Best practice
When describing experimental conditions or treatments, use "maintained for" to clearly indicate the duration of a specific state or action. This provides clarity and reproducibility in scientific writing.
Common error
Don't use imprecise language when specifying duration. Instead of saying "The temperature was maintained for some time", provide a specific duration, such as "The temperature was maintained for 30 minutes" to enhance clarity and avoid ambiguity.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "maintained for" functions as a verb phrase with a preposition, indicating the duration over which a specific condition, state, or action is preserved or kept constant. Ludwig's examples show its use in contexts like temperature control, treatment durations, and record keeping.
Frequent in
Science
64%
News & Media
19%
Academia
17%
Less common in
Encyclopedias
0%
Wiki
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "maintained for" is a versatile and commonly used expression that functions to specify the duration for which a condition, process, or activity is kept constant. It is grammatically correct and appears most frequently in scientific, academic, and news contexts. Ludwig's analysis reveals its usage across various domains, highlighting its utility in providing precise temporal information. When writing, ensure to avoid vague timeframes and specify clear durations to enhance clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
continued for
Offers a more direct and less formal way to state that something was ongoing for a period.
kept up for
Emphasizes the effort to continue something, adding a nuance of active preservation that "maintained for" might lack.
sustained for
Highlights the ability to keep something going, focusing on the endurance aspect more than the simple duration.
preserved for
Implies a focus on preventing degradation or change, which is a specific type of maintenance.
held for
Suggests a more forceful or deliberate act of keeping something in a specific state or condition.
retained for
Focuses on keeping possession or control of something, adding a sense of ownership or authority.
prolonged for
Emphasizes extending the duration, adding a sense of making something last longer than expected.
upheld for
Implies maintaining a standard or principle, not just a state or condition.
executed for
Focuses on the performance of a task during a period, adding an element of active work.
administrated for
Highlights the management aspect during a specific period, useful in contexts related to governance or care.
FAQs
How can I rephrase "maintained for" to sound more formal?
In more formal contexts, consider using alternatives such as "sustained for", "preserved for", or "retained for". The choice depends on the specific nuance you wish to convey.
What is the difference between "maintained for" and "continued for"?
"Maintained for" suggests an active effort to keep something in a specific condition, while "continued for" simply indicates that something was ongoing without necessarily implying any specific action to preserve it.
Is it correct to use "maintained for" when describing a process?
Yes, "maintained for" is perfectly correct when describing a process or condition that was actively kept in a specific state for a certain period. For example, "The pressure was maintained for 2 hours".
What are some common contexts where "maintained for" is used?
"Maintained for" is frequently used in scientific research, medical studies, and technical documentation to describe how long conditions or treatments were kept consistent. It is also common in business and legal contexts when referring to agreements or standards upheld over 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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested