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
but know this
Grammar usage guide and real-world examplesUSAGE SUMMARY
"but know this" is correct and usable in written English.
You can use this phrase to introduce an important point. For example, "There are many obstacles ahead, but know this: together, we can achieve anything."
✓ Grammatically correct
News & Media
Alternative expressions(17)
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
But know this I do.
News & Media
"America, but know this," it reads.
News & Media
But know this: it never ends.
News & Media
"But know this: the next election is fourteen months away.
News & Media
But know this, America: our problems can be solved.
News & Media
But know this America: They will be met.
News & Media
But know this: you cannot un-see them.
News & Media
But know this: the hopes of a nation are here tonight.
News & Media
"I am understandably frustrated but know this is the right approach.
News & Media
He added: "But know this, America: Our problems can be solved.
News & Media
"But know this, that in the last days, perilous times will come," the chapter begins.
News & Media
Expert writing Tips
Best practice
Consider the tone of your writing; while generally acceptable, "but know this" can sometimes sound slightly assertive. Adjust your language accordingly to maintain the desired level of formality.
Common error
Avoid using "but know this" too frequently within a single piece of writing, as it can lose its impact and sound repetitive. Vary your transitional phrases to maintain reader engagement.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary function of "but know this" is to serve as a transitional phrase, connecting a preceding statement with a crucial point or caveat that the speaker or writer wants to emphasize. Ludwig AI confirms its usability in written English, highlighting its role in introducing important information.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Ludwig's WRAP-UP
"But know this" is a common and grammatically sound phrase used to introduce a significant point or caveat. As Ludwig AI confirms, it's a useful tool for emphasizing information, primarily in news and media contexts. While versatile, it's important to consider the register and avoid overuse. Alternatives like "however, be aware of this" can offer a more formal tone when needed. Remember to prioritize impact and clarity in your writing by choosing the most appropriate transitional phrase for each context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
yet, understand this
Substitutes "but" with "yet" and "know" with "understand", offering a slightly more sophisticated feel.
however, be aware of this
Replaces "but know this" with a more formal tone using "however" and "be aware".
still, bear this in mind
Replaces "but" with "still" for a more casual tone and uses "bear this in mind" to suggest consideration.
nonetheless, remember this
Employs "nonetheless" for emphasis and "remember this" as a gentle reminder.
nevertheless, keep this in mind
Uses "nevertheless" for a stronger contrast and "keep this in mind" to soften the directive.
conversely, take note of this
Highlights the contrast more directly and emphasizes the importance of noting the following information.
on the other hand, consider this
Introduces a contrasting viewpoint more explicitly while urging consideration.
despite that, be informed
Uses "despite that" to acknowledge a previous point and "be informed" to introduce new information.
with that said, be warned
Implies a caveat or potential negative consequence, adding a sense of urgency.
even so, take heed
Offers a more cautionary note, urging careful attention to what follows.
FAQs
What is the purpose of using "but know this" in a sentence?
The phrase "but know this" is used to introduce a crucial point, often after presenting a contrasting idea. It serves to emphasize the importance of the information that follows.
Are there alternative ways to phrase "but know this"?
Yes, you can use alternatives such as "however, be aware of this", "yet, understand this", or "nonetheless, remember this" to convey a similar meaning with slightly different nuances.
Is "but know this" considered formal or informal?
The phrase "but know this" falls into a neutral register and is appropriate for many contexts, it might be more suitable for journalistic or narrative writing than formal academic papers.
In what situations should I avoid using "but know this"?
While generally acceptable, "but know this" can sound somewhat assertive. In highly formal or diplomatic contexts, consider using a more subtle transition to maintain a respectful tone.
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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