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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
completely serious
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "completely serious" is correct and usable in written English.
You can use it to emphasize that someone is not joking or being sarcastic about a statement or situation. Example: "I want you to know that I am completely serious about this project and its importance to our future."
✓ Grammatically correct
News & Media
Academia
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
He was completely serious.
News & Media
She's also completely serious.
News & Media
I am being completely serious.
News & Media
"Like, kike," she says, turning completely serious.
News & Media
But the endeavour is completely serious.
News & Media
Or they were completely serious, but they knew it was funny.
News & Media
Imus, who loves to joke about Washington sex scandals, is completely serious about his charitable work.
News & Media
Sometimes these elaborations culminate in a result that is both completely serious and wonderfully dandified.
News & Media
"I think the secret sauce is the haircut," he said, completely serious.
News & Media
A moment of silence passed that suggested he was completely serious.
News & Media
But I think, looking back on it, that he was completely serious.
News & Media
Expert writing Tips
Best practice
Use "completely serious" to clearly indicate that you are not joking or being sarcastic, especially when the context might suggest otherwise.
Common error
Avoid using "completely serious" when the context already implies sincerity. Overusing it can make your writing sound repetitive or insincere. Instead, let the gravity of the situation speak for itself.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "completely serious" functions as an intensifier, modifying the adjective "serious" to emphasize the depth and genuineness of the statement. Ludwig confirms its correct usage, demonstrating that it is a standard way to express sincerity.
Frequent in
News & Media
60%
Academia
15%
Science
10%
Less common in
Formal & Business
8%
Encyclopedias
3%
Wiki
2%
Ludwig's WRAP-UP
In summary, "completely serious" is a commonly used phrase to emphasize the sincerity and lack of jest in a statement. As Ludwig confirms, it's grammatically sound and versatile, appearing across diverse contexts, including news, academic writing, and even casual conversation. While alternatives like "totally serious" and "absolutely serious" exist, "completely serious" remains a reliable choice for clearly conveying your earnest intentions. Remember that while it is ok to use "completely serious" avoid redundancy in situations where sincerity is already evident from the context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
totally serious
Interchangeable with "completely serious", using "totally" as a synonym for "completely".
entirely serious
Emphasizes the full extent of seriousness, similar to "completely serious".
dead serious
An informal way to express absolute seriousness.
perfectly serious
Highlights the flawless and genuine nature of the seriousness.
absolutely serious
Reinforces the idea of seriousness without any doubt.
in earnest
Implies a sincere and intense state of mind.
no joke
An idiomatic expression indicating a serious matter.
without jest
Formal expression emphasizing the absence of humor.
in all seriousness
Highlights a shift to a grave and sincere tone.
sincere
A more concise way to express genuine feelings or intentions.
FAQs
How can I use "completely serious" in a sentence?
You can use "completely serious" to emphasize the sincerity of a statement. For example, "I want you to know I'm "completely serious" about this matter."
What are some alternatives to "completely serious"?
Alternatives include "totally serious", "entirely serious", or "absolutely serious", which all convey a similar level of sincerity.
Is it redundant to say "I'm completely serious"?
While it can be, using "I'm "completely serious"" can be helpful to remove any doubt about your intentions, particularly in situations where your statement might be misinterpreted as sarcasm or a joke.
What's the difference between "serious" and "completely serious"?
"Serious" indicates a state of earnestness, while ""completely serious"" emphasizes that there is no levity or joking involved at all; it amplifies the degree of sincerity.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested