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
I back that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I back that" is correct and usable in written English.
It can be used to express support or agreement with a statement, idea, or action. Example: "After hearing the proposal, I back that and believe it will benefit our project."
✓ Grammatically correct
News & Media
Alternative expressions(5)
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
She is to study its proposals in further detail, but added: "The commission's central recommendation is that the tax burden should be no higher in Scotland than in the rest of the UK, and lower when affordable – and I back that 100%.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
OK, I take it back, that IS worse.
News & Media
When I look back, that's probably what I'm most proud of".
News & Media
"When I came back, that house stank — what a stench".
News & Media
I came back that afternoon to collect my care package.
News & Media
"It wasn't until I came back that I realised I'd changed so much.
News & Media
I remember when I loved him back that much.
News & Media
When I text back that I wasn't the author, I get some apologies.
News & Media
"I wrote back that I'd like to explain how I could do the position.
News & Media
I wrote back that I was safe, too.
News & Media
It wasn't until I got back that I appreciated the necessity to do so.
News & Media
Expert writing Tips
Best practice
Use "I back that" when you want to express your support for a specific idea or proposal, particularly in a straightforward and slightly informal context.
Common error
Avoid using "I back that" in highly formal or professional contexts where a more sophisticated expression of support may be more appropriate. Consider using phrases like "I endorse that" or "I fully support that" instead.
Source & Trust
100%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I back that" functions as an expression of agreement or support for a previously mentioned statement or proposal. As confirmed by Ludwig, it is grammatically correct and usable in English.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "I back that" is a grammatically correct phrase used to express support or agreement. As Ludwig AI confirms, its usage is relatively rare but primarily found in news and media contexts. While it's suitable for informal communication, more formal alternatives like "I support that" or "I endorse that" may be preferable in professional settings. Remember to use it to show direct agreement with an idea and be mindful of the level of formality required.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I support that
Replaces "back" with "support", a more common and direct synonym.
I endorse that
Uses "endorse" to convey a more formal and public expression of support.
I second that
Emphasizes agreement with a previous statement or proposal.
I'm in favor of that
Expresses a preference or positive inclination towards something.
I agree with that
Offers a straightforward statement of agreement.
I'm all for that
Suggests enthusiastic agreement and support.
I'm behind that
Indicates support and willingness to help or promote something.
That has my backing
Rephrases to emphasize the support being given.
I'm sold on that
Expresses that you are convinced and fully supportive.
I'm convinced of that
Emphasizes belief and agreement with something.
FAQs
What does "I back that" mean?
The phrase "I back that" means that you support or agree with a statement, idea, or proposal. It's a way of saying that you are in favor of something and willing to support it.
What can I say instead of "I back that"?
You can use alternatives like "I support that", "I endorse that", or "I agree with that" depending on the context.
Is "I back that" formal or informal?
"I back that" is generally considered to be informal. For more formal situations, consider using phrases like "I support that" or "I endorse that".
How can I use "I back that" in a sentence?
You can use "I back that" to express your support for a specific idea. For example, "After hearing the proposal, "I back that" and believe it will benefit our project".
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
100%
Authority and reliability
4.3/5
Expert rating
Real-world application tested