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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a certain of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a certain of" is not correct and not usable in written English.
It seems to be a misconstruction, as it typically should be "a certain number of" or "a certain type of." Example: "There are a certain number of factors to consider in this decision."
⚠ May contain grammatical issues
Science
News & Media
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
10 human-written examples
After all, the Giants, especially their starters, had performed with a certain of precision.
News & Media
An innovative design of micro-electromagnetic drive module is proposed to make a Π-type thin disc reciprocally and efficiently rotate within a certain of angular interval.
The sensitivity of the model predictions involving four parameters indicates that ew and φ have weak influence on the correctly prediction of core-annulus flow, while the model remains a certain of sensitivity to es and Cs.
Science
They produce a list dominated by a certain of type of institution.
News & Media
It is in the process of moving to a subscription model where customers pay a fixed rate up to a certain of number of translated words.
News & Media
I know that there's a certain of percentage of people who want nothing to do with Modern Warfare 2. It's all meatheads and explosions, right?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
They're meant to connote certain types of programming, a certain method of production, a certain type of consumption.
News & Media
Of a certain type of actor.
News & Media
That's a savings of a certain amount of dollars!
News & Media
The volume of CaCl2 solution required to remove a certain % of Cd decreased with increasing concentration of CaC12.
A certain type of author.
News & Media
Expert writing Tips
Best practice
Avoid using the phrase "a certain of" in your writing. It's grammatically incorrect. Instead, opt for alternatives like "a certain amount of", "a certain number of", or "a certain type of" depending on the context to ensure clarity and correctness.
Common error
Many writers mistakenly use "a certain of" when they intend to express a quantity or type. Always include a noun after "certain" to complete the phrase correctly. For example, use "a certain amount of" for uncountable nouns and "a certain number of" for countable nouns.
Source & Trust
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a certain of" functions as a determiner intended to specify a quantity or type, but it is grammatically incomplete. Ludwig AI flags it as incorrect, suggesting it needs to be followed by a noun phrase like "amount of", "number of", or "type of" to be grammatically sound.
Frequent in
Science
40%
News & Media
40%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "a certain of" is grammatically incorrect and should be avoided in formal writing. Ludwig AI highlights this issue, suggesting the use of more appropriate alternatives such as "a certain amount of", "a certain number of", or "a certain type of". While the phrase appears across various contexts, its incorrect usage undermines its effectiveness and clarity. Always ensure that "certain" is followed by a noun phrase to maintain grammatical correctness and precision in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a certain amount of
Replaces "of" with "amount of" to specify a quantity, maintaining a similar level of imprecision.
a certain number of
Uses "number of" to denote a countable quantity, providing a more grammatically sound alternative.
a certain type of
Substitutes "type of" to indicate a specific category or kind, enhancing clarity.
a particular kind of
Replaces "certain" with "particular" while keeping "kind of" to denote a specific category.
a specific instance of
Uses "specific instance of" to refer to a particular occurrence, making the phrase more precise.
a given level of
Replaces "certain" with "given" and "of" with "level of", indicating a predetermined extent or degree.
a degree of
Simplifies the phrase to "a degree of", indicating a specific but unspecified amount or extent.
a measure of
Substitutes "certain of" with "measure of", conveying a quantified aspect without being precise.
some level of
Uses "some level of" to suggest an unspecified but present extent or degree.
a portion of
Indicates a part of a whole, implying an unspecified but definite quantity.
FAQs
What phrases can I use instead of "a certain of"?
You can use alternatives like "a certain amount of", "a certain number of", or "a certain type of" depending on the context.
Is the phrase "a certain of" grammatically correct?
No, the phrase "a certain of" is not grammatically correct. It is generally considered a misuse, and it should be avoided in formal writing.
How do I choose between "a certain amount of" and "a certain number of"?
"A certain amount of" is used with uncountable nouns (e.g., water, money), while "a certain number of" is used with countable nouns (e.g., books, people).
What is the difference between "a certain" and "a particular"?
"Certain" and "particular" are often interchangeable, but "particular" emphasizes a specific instance more strongly. For example, "a particular kind of" suggests a more precise selection than "a certain kind of".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested