Used and loved by millions
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
in complete certainty
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "in complete certainty" is correct and usable in written English.
It can be used when expressing absolute confidence or assurance about a particular statement or situation. Example: "I can say in complete certainty that our project will be completed on time."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
Alternative expressions(15)
with absolute certainty
with total certainty
beyond any doubt
without a shadow of a doubt
with complete assurance
with unwavering conviction
in full confidence
with utmost confidence
in complete confidence
confidently
with total conviction
without a doubt
with full confidence
with utmost certainty
with firm belief
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
1 human-written examples
He has issued a decree that no one is allowed to bury him, and he has done this in complete certainty that he is right.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
"It's wrapped up in that complete certainty about where you're going and what you need to do".
News & Media
If, in a given situation, the facts are of a certain order, we are warranted in deducing with complete certainty that other facts which it enables us to describe are also present.
Science
He argues that the radical skeptic borrows something from our experience, absolutizes it, then in his quest for complete certainty, he uses it to terrorize our experience of 'inherence in the world', an experience that Merleau-Ponty, in The Visible and the Invisible, calls "perceptual faith".
Science
In addition to their willingness to proactively implement management activities in the absence of complete certainty as to their effectiveness, MROSD has also played an important role by leveraging resources.
Science
Some assumptions might stem from certain factors that can be forecasted with almost complete certainty (in Quik-Serv's case, for example, the number of licensed drivers in 1997), and you might consider some information, such as calculated natural resources, accurate and conclusive.
News & Media
In many instances, however, complete certainty is unattainable.
Science
MRV determined IVC obstruction with complete certainty in 100%% of cases.
3 Within-trial analysis, for which we have complete certainty in outcomes, estimated ICERs below the WTP thresholds for both the UK and Spain.
Science
(q 2 + q 4 ) penalizes complete certainty in wrong diagnosis as twice as bad as a wrong diagnosis with complete uncertainty, and a right diagnosis with complete uncertainty is 1/10 as a bad as the best wrong diagnosis.
If the inventory is small there is a considerable chance (or complete certainty in the case of a binary inventory) that the result of the mutation will be the original one (since mutating an element twice will result the original one).
Science
Expert writing Tips
Best practice
Use "in complete certainty" to convey a strong sense of confidence and assurance when the situation warrants it. Avoid overuse, as it can sound overly assertive or dogmatic.
Common error
Don't use "in complete certainty" when you mean "in fact" or "certainly". This phrase indicates a strong belief or assurance, not necessarily a proven fact. Ensure your confidence is justified by evidence or strong reasoning.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in complete certainty" primarily functions as an adverbial modifier, adding emphasis to a statement by expressing a high degree of confidence or assurance. Ludwig AI shows that the phrase is used to convey a strong sense of conviction.
Frequent in
News & Media
40%
Science
35%
Wiki
10%
Less common in
Encyclopedias
5%
Formal & Business
5%
Reference
5%
Ludwig's WRAP-UP
In summary, "in complete certainty" is a grammatically sound phrase used to express a strong sense of assurance or conviction. While it is prevalent across various contexts, including news and scientific domains, it should be employed judiciously to prevent sounding overly assertive. Ludwig AI analysis affirms its correctness and utility in written English. Alternatives such as "with absolute certainty" or "beyond any doubt" can be used for similar emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
with absolute certainty
Replaces "complete" with "absolute" for emphasis, maintaining the same meaning.
with total certainty
Substitutes "complete" for "total", indicating a full degree of confidence.
with complete assurance
Replaces "certainty" with "assurance", focusing on the confident declaration.
beyond any doubt
Expresses certainty by negating the possibility of doubt.
without a shadow of a doubt
Similar to "beyond any doubt", this phrase emphasizes the lack of uncertainty.
with unwavering conviction
Shifts the focus to the speaker's strong belief or conviction.
in full confidence
Emphasizes the confidence held in a particular outcome or statement.
with utmost confidence
Uses "utmost" to intensify the level of confidence expressed.
positively certain
Uses an adjective to directly describe the state of certainty.
unequivocally sure
Combines "unequivocally" with "sure" to denote a clear and unambiguous certainty.
FAQs
What does "in complete certainty" mean?
The phrase "in complete certainty" means with absolute assurance or confidence, leaving no room for doubt. It indicates a firm belief or conviction about something.
How can I use "in complete certainty" in a sentence?
You can use "in complete certainty" to emphasize the strength of your conviction. For example: "I can say "with absolute certainty" that our team will succeed."
What are some alternatives to "in complete certainty"?
Some alternatives to "in complete certainty" include "with total certainty", "beyond any doubt", or "without a shadow of a doubt". The best choice depends on the specific context and the nuance you want to convey.
Is it better to use "in complete certainty" or "with complete certainty"?
Both "in complete certainty" and "with complete certainty" are grammatically correct and have similar meanings. "With complete certainty" is generally more common and may sound slightly more natural, but "in complete certainty" is also acceptable.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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
4.5/5
Expert rating
Real-world application tested