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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 sound
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "completely sound" is correct and usable in written English.
It can be used to describe something that is entirely valid, reliable, or free from flaws, often in contexts like arguments, reasoning, or systems. Example: "The proposal was thoroughly reviewed and deemed completely sound by the committee."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(20)
out of my price range
unaffordable for me
I have no control over that
beyond my skill
completely unproven
unimaginable to me
financially unattainable
completely unpredictable
more than proper
a complete surprise
completely different
entirely justifiable
a somewhat expensive
beyond my tolerance
beyond my time
above my head
a bit burdensome
not within my competence
outside my field
not my problem
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
13 human-written examples
Where the Air Is Sweet The rumors are completely sound: "Avenue Q" is Broadway bound.
News & Media
But the principles Smith advocates are completely sound, as is his practical advice.
News & Media
They have advised us that we have a completely sound position as far as taxes go".
News & Media
"After a thorough physical exam yesterday, Uncle Mo was found to be completely sound," said Uncle Mo's trainer, Todd Pletcher.
News & Media
He represented the success of it — but also the sense that investment banking is dicey and not a completely sound business.
News & Media
There was no sign of a limp or a twinge but, when asked if the ankle was now completely sound, she rebutted the suggestion: "I just don't know what will happen.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
You don't have to say yes to something that sounds completely horrible.
Wiki
Motion Picture Soundtrack had the ache of a long goodbye; How to Disappear Completely sounded like a letter from a desperate man confronting the corrosive effects of fame.
News & Media
I sat down and looked around as he took a couple of phone calls — the anechoic chamber (a completely sound-absorptive room) in the corner got most of my attention, taking my mind off of how clammy my hands were getting.
News & Media
The actual act of cleaning the office and removing the smell completely, sounds tricky.
News & Media
If it all sounds completely unmanageable, it's not.
News & Media
Expert writing Tips
Best practice
When describing abstract concepts like arguments or plans, use "completely sound" to assure your audience of their robustness and lack of flaws. This boosts confidence in your statements.
Common error
Avoid using "completely sound" in very casual conversations. While grammatically correct, it can sound overly formal or stilted. Opt for more natural alternatives like "totally fine" or "all good" to maintain a conversational tone.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "completely sound" functions as an adjective phrase that modifies a noun, indicating that the noun is entirely valid, reliable, and without flaws. As evidenced by Ludwig, this phrase is used to describe arguments, positions, or physical states.
Frequent in
News & Media
48%
Wiki
20%
Science
12%
Less common in
Formal & Business
10%
Reference
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "completely sound" is a grammatically correct and usable adjective phrase that signifies something is entirely valid and reliable. Ludwig's analysis indicates that it's most commonly used in news and media, Wiki, and science-related contexts. While "completely sound" isn't overly common, it effectively conveys assurance and confidence in formal and professional settings. When writing, consider more casual alternatives like "totally fine" in informal contexts. Alternatives, depending on the situation, include "entirely valid" or "totally reliable".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
entirely valid
Replaces "completely sound" with a focus on the validity of something.
perfectly valid
Emphasizes the validity with an additional layer of perfection.
totally reliable
Focuses on the reliability aspect instead of soundness.
thoroughly reliable
Highlights the depth of the reliability.
entirely reliable
Highlights that reliability is complete and total.
fully reliable
Similar to 'totally reliable', emphasizing the completeness of reliability.
absolutely solid
Uses "solid" as a synonym for "sound", indicating strength and dependability.
unquestionably valid
Focuses on the lack of doubt regarding the validity.
absolutely credible
Highlights the believability and trustworthiness of the subject.
utterly dependable
Stresses the dependability and reliability aspect to a great extent.
FAQs
What does "completely sound" mean?
The phrase "completely sound" means that something is entirely valid, reliable, and free from flaws. It often describes arguments, systems, or structures that are well-founded and without defects.
How can I use "completely sound" in a sentence?
You can use "completely sound" to describe anything that is robust and free from error. For example: "After a thorough physical exam yesterday, Uncle Mo was found to be "completely sound"."
What are some alternatives to "completely sound"?
Alternatives to "completely sound" include phrases like "entirely valid", "perfectly valid", or "totally reliable". The best choice depends on the specific nuance you want to convey.
When is it appropriate to use "completely sound"?
It is appropriate to use "completely sound" in formal or professional contexts where you want to emphasize the reliability and validity of something. It is less suitable for informal conversations where simpler terms might be more appropriate.
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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
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested