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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
certainly certain
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "certainly certain" is correct and usable in written English.
It can be used to emphasize a strong assurance or confidence in a statement or belief. Example: "After reviewing all the evidence, I am certainly certain that our approach will succeed."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(6)
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
I think you can see progress in Western countries in terms of, certainly, certain classes of women's aspirations having been struggled with.
News & Media
There should be competition and exchanges between different countries, but there are certainly certain universal values and that is freedom and democracy.
News & Media
Certainly, certain prehospital systems that function in the ALS model function extremely efficiently.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Certainly, Practically Certain (99 in 100); Almost Sure (9 in 10); Very Probably (8 in 10); Probably (7 in 10); Good Possibility (6 in 10); Fairly Good Possibility (5 in 10); Fair Possibility (4 in 10); Some Possibility (3 in 10); Slight Possibility (2 in 10); Very Slight Possibility (1 in 10); No Chance, Almost No Chance (1 in 100).
Science
As for Pollock, he could be brutal but was certainly less certain when confronted with quality spin.
News & Media
Asked whether the military was considering bases inside the United States as detention centers for the mounting number of prisoners from the war, the secretary said, "Certainly for certain types of detainees, yes".
News & Media
Culture is really about the richness of that fabric, and it seems to me that in this fire enough was lost, certainly by certain people, that the fabric of that record, of that continuity, is lost.
News & Media
Assuming I still have a lot of money by the time I retire which is certainly no certain thing I will give away well over 90% of it since I dont believe in kids having too much money.
News & Media
Autocorrect support for multiple languages does sound like a very handy feature — certainly for certain European countries, and particular demographics in the U.S. "In Switzerland, we speak three languages plus English.
News & Media
And we can certainly trust certain comparative judgments: even if we are almost completely ignorant of how to correct for the altitude change, if the reading falls fast consistently for an hour, we can safely infer that a low pressure front is moving in.
Science
It certainly encourages certain things". .
News & Media
Expert writing Tips
Best practice
Consider using "certainly certain" when addressing potential skepticism or doubt. The repetition emphasizes your conviction.
Common error
Avoid using "certainly certain" excessively, as it can sound repetitive or unnatural. Instead, vary your language with synonyms like "absolutely sure" or "undoubtedly certain" to maintain a more sophisticated tone.
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "certainly certain" functions as an intensifier, emphasizing the speaker's or writer's conviction. It reinforces the adjective "certain" with the adverb "certainly". Ludwig AI confirms its usability in written English, as evidenced by the examples provided.
Frequent in
News & Media
56%
Science
29%
Wiki
3%
Less common in
Formal & Business
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "certainly certain" is a grammatically correct intensifier used to emphasize conviction. While not as common as its alternatives, it serves to eliminate any doubt in a statement. As Ludwig AI confirms, this phrase is usable in English and appears in sources like The New York Times and The Guardian. Use it sparingly to avoid redundancy, and consider varying your language with synonyms like "absolutely sure" or "undoubtedly certain" for stylistic variation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
undoubtedly certain
Replaces 'certainly' with 'undoubtedly' to convey a similar sense of assurance.
absolutely sure
Emphasizes certainty through the intensifier 'absolutely'.
definitely certain
Uses 'definitely' as an adverb to reinforce the certainty.
positively certain
Indicates certainty with a positive affirmation.
completely certain
Highlights the comprehensive nature of the certainty.
assuredly certain
Replaces 'certainly' with 'assuredly', suggesting a confident assertion.
unquestionably certain
Indicates a certainty that cannot be doubted.
indubitably certain
Expresses certainty in a formal and emphatic way.
unmistakably certain
Highlights the clarity and lack of ambiguity in the certainty.
categorically certain
Emphasizes a firm and unambiguous declaration of certainty.
FAQs
How can I effectively use "certainly certain" in a sentence?
Use "certainly certain" to emphasize a point where you want to leave no room for doubt. For example, "After reviewing all the data, I am "certainly certain" that our hypothesis is correct."
What are some alternatives to "certainly certain"?
Alternatives include "absolutely certain", "undoubtedly sure", or "definitely convinced". The best choice depends on the specific context and desired tone.
Is it grammatically correct to use "certainly certain"?
Yes, the phrase "certainly certain" is grammatically correct, although it is somewhat redundant. It's used for emphasis, indicating a high degree of confidence.
In what contexts is "certainly certain" most appropriate?
The phrase "certainly certain" is most appropriate in situations where you want to strongly assert your belief or conviction, such as in persuasive writing or when clarifying a possibly misunderstood point.
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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
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested