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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
they will definitely
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they will definitely" is correct and usable in written English.
You can use it to express certainty about a future action or event involving a group of people. Example: "If they continue to work hard, they will definitely succeed in their goals."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(1)
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
59 human-written examples
"They will definitely hit Idlib.
News & Media
They will definitely find the answer".
News & Media
They will definitely laugh at me.
News & Media
"They will definitely get take up.
News & Media
And they will definitely not be Twittering.
News & Media
On their own patch, they will definitely be strong.
News & Media
They will definitely be coming after him Sunday.
News & Media
"They will definitely try to talk to you," he said.
News & Media
Better still, imagine they will definitely read it.
News & Media
If you give them opportunity, they will definitely flourish.
News & Media
But in other countries they will definitely find an audience".
News & Media
Expert writing Tips
Best practice
Consider using related phrases like "they are certain to" or "they undoubtedly will" to add nuance or variety to your writing.
Common error
Avoid overusing "definitely" in highly formal or academic writing, as it can sometimes sound less objective. Opt for more nuanced alternatives like "it is highly likely that they will" to maintain a professional tone.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they will definitely" functions as a modal expression indicating a high degree of certainty about a future action or event. It modifies the verb to strengthen the prediction, as seen in Ludwig's examples.
Frequent in
News & Media
45%
Wiki
20%
Science
15%
Less common in
Formal & Business
10%
Reference
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, the phrase "they will definitely" is a common and correct way to express strong certainty about a future event. As confirmed by Ludwig AI, it is widely used across various contexts, including news, general writing, and even scientific discussions. While it maintains a neutral register, remember to consider more formal alternatives for highly professional or academic settings. When aiming to convey assurance and confidence, "they will definitely" is a reliable and effective choice.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they are certain to
Focuses on the certainty of the action, rather than the definitive nature.
they are sure to
Implies a high degree of confidence in the outcome.
they undoubtedly will
Emphasizes the lack of doubt about the future event.
they assuredly will
Highlights the confidence in the expected action.
they absolutely will
Stresses the completeness and certainty of the action.
it's guaranteed they will
Positions the certainty as a guarantee.
they without a doubt will
Reinforces the absence of any uncertainty.
they inevitably will
Suggests the action is unavoidable or destined to happen.
they veritably will
Emphasizes the truth and accuracy of the anticipated event.
they indisputably will
Highlights that the certainty cannot be argued or questioned.
FAQs
How can I use "they will definitely" in a sentence?
You can use "they will definitely" to express a strong belief or certainty about a future event involving a group. For example: "If they follow the instructions, "they will definitely" succeed".
What can I say instead of "they will definitely"?
You can use alternatives like "they are certain to", "they are sure to", or "they undoubtedly will" to convey similar meanings.
Is it correct to say "they definitely will"?
While grammatically understandable, "they will definitely" is more common and natural-sounding than "they definitely will". The former order is generally preferred in English.
What's the difference between "they will definitely" and "they might"?
"They will definitely" expresses certainty, while "they might" expresses possibility or uncertainty. They are opposite in meaning.
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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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested