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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
really certain
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "really certain" is correct and usable in written English.
It can be used to emphasize a strong level of certainty about something. Example: "After reviewing all the evidence, I am really certain that we made the right decision."
✓ Grammatically correct
News & Media
Academia
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
41 human-written examples
Only one thing is really certain.
News & Media
I wasn't really certain until I actually bought the restaurant".
News & Media
Indeed, probably the only really certain verbal suffix is -ce.
Encyclopedias
Also, I felt certain — somehow really certain — that I was being lied to.
News & Media
They do, they say, "though we're not really certain what that means any more".
News & Media
Karl Rove said, "I'm not really certain how intellectually strong she would be".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
19 human-written examples
"We just really liked certain trees.
News & Media
The writer gives several sample programs to really startle certain drivers.
News & Media
"For me, it is more about trying to really understand certain issues ….
News & Media
Technology has really enabled certain markets by reducing the friction with which transactions take place.
So we say that it is really not certain that C02 causes global warming.
Academia
Expert writing Tips
Best practice
Use "really certain" to emphasize a strong feeling of conviction without sounding overly formal. It's suitable for conversational and journalistic contexts.
Common error
Avoid using multiple intensifiers (e.g., "really, really certain") as it can weaken your writing and sound less sincere. Choose a single, strong intensifier or rephrase the sentence for greater impact.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "really certain" functions as an intensifier modifying an adjective. It strengthens the degree of certainty being expressed. Ludwig AI's analysis confirms its usability in various contexts.
Frequent in
News & Media
65%
Academia
15%
Wiki
8%
Less common in
Science
6%
Formal & Business
3%
Encyclopedias
3%
Ludwig's WRAP-UP
In summary, "really certain" is a commonly used and grammatically sound phrase to express a strong degree of confidence. Ludwig AI confirms its correctness and versatility, showcasing its prevalence in news, academic, and general writing. While alternatives like "absolutely certain" exist, "really certain" strikes a balance between informality and clarity. Remember to avoid overusing intensifiers for a more impactful expression. Whether you're discussing scientific findings or personal beliefs, this phrase effectively conveys your conviction.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
absolutely certain
Emphasizes a complete lack of doubt; stronger than "really certain".
completely sure
Similar in meaning but focuses on a feeling of sureness.
entirely convinced
Highlights the process of becoming certain through persuasion or evidence.
firmly believe
Indicates a strong conviction, often based on personal faith or opinion.
thoroughly convinced
Similar to "entirely convinced" but suggests a more in-depth evaluation.
genuinely certain
Emphasizes the sincerity and authenticity of the certainty.
definitely sure
Combines an adverb of certainty with an adjective of sureness.
positive beyond doubt
Highlights the absence of any uncertainty.
undeniably certain
Implies that the certainty is so strong it cannot be disputed.
assuredly certain
Combines certainty with a sense of confidence and assurance.
FAQs
How can I use "really certain" in a sentence?
You can use "really certain" to express a high degree of confidence about something. For example: "I am "really certain" that this is the right decision."
What are some alternatives to "really certain"?
Alternatives include "absolutely certain", "completely sure", or "entirely convinced", depending on the specific nuance you want to convey.
Is it more formal to say "really certain" or "absolutely certain"?
"Absolutely certain" tends to be slightly more formal than "really certain", but both are widely acceptable. The best choice depends on the context and your desired tone.
Which is correct, "I'm really certain" or "I am really certain"?
Both "I'm really certain" and "I am really certain" are grammatically correct. The contracted form "I'm" is more informal and common in everyday speech, while "I am" is slightly more formal.
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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
4.5/5
Expert rating
Real-world application tested