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
rack your brain
Grammar usage guide and real-world examplesUSAGE SUMMARY
"rack your brain" is a correct and usable phrase in written English.
You would use it when you are trying to figure out an answer or solution to something, often something tricky. For example: "I can't seem to remember the answer to this question; I'm going to have to rack my brain."
✓ Grammatically correct
News & Media
Academia
Wiki
Alternative expressions(3)
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
17 human-written examples
As all eyes rest on you, you rack your brain for a mega-blockbuster idea.
News & Media
If you had to rack your brain to recall who Ms. Skinner is — and particularly if you came up empty — perhaps this is not the musical for you.
News & Media
Sometimes you have to really rack your brain just to remember your own children's names, not that that has ever happened to me.
News & Media
On the bright side, you don't have to rack your brain selecting outfits in the morning; simply put on everything in your closet and you're good to go! 4. Get naked.
News & Media
It's a good idea to keep track of anecdotes that happen to you now, instead of having to rack your brain later to remember a situation from 5 years ago.
Academia
Then, your attending asks, "what else should we be thinking about for this patient?" You rack your brain, but all that comes to mind is a random textbook chart or mnemonic that doesn't seem to be relevant.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
43 human-written examples
Time to rack your brains to come up with cool gifts for the tech nuts in your life.
News & Media
"You rack your brains to come up with ways of helping the children, and this is what you get for your pains," he complains.
News & Media
You would have to rack your brains to remember his last hit as a leading man – or even the last time you saw him smile.
News & Media
GA: The film is full of references and allusions, did you rack your brains for them, and why are you so keen on doing that?
News & Media
Here's what we need you to do: look at the times and quotes that have already been submitted, rack your brains, rummage through bookshelves and, using the form below, give us a quote from a book or a play that relates to a specific time.
News & Media
Expert writing Tips
Best practice
Consider the context and audience; while generally acceptable, more formal situations might benefit from less idiomatic alternatives.
Common error
While "rack your brain" is widely understood, it might sound too informal or colloquial in academic papers or formal business reports. Opt for more precise language to describe the cognitive process.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "rack your brain" is that of an idiomatic verb phrase. According to Ludwig AI, this phrase suggests an active, albeit difficult, attempt to remember or solve a problem. It's often used to emphasize the mental effort involved.
Frequent in
News & Media
54%
Wiki
23%
Academia
15%
Less common in
Science
8%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "rack your brain" is a common idiomatic phrase used to describe the act of exerting significant mental effort to remember something or solve a problem. Ludwig AI confirms its correct usage in written English. While grammatically sound, its register is more neutral to informal, making it suitable for news articles, blogs, and general conversation. However, in formal academic or business contexts, a more precise alternative might be preferred. Remember that the emphasis here is the difficult mental effort of recall.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
search your memory
More literal and less idiomatic way of expressing the same idea.
strain your memory
Similar to taxing your mind, this highlights the strain on one's mental capacity and memory.
cudgel your brains
A more intense, and somewhat humorous, variation with similar meaning.
struggle to remember
Highlights the difficulty of the remembering process.
think hard
More general term, lacks the intensity implied in the original phrase.
tax your mind
Emphasizes the strain on one's mental capacity.
cast your mind back
Specifically refers to trying to remember something from the past.
puzzle over
Focuses more on the problem itself than the mental effort.
think something through
Focuses on a thorough mental process rather than immediate recall.
apply oneself
A more general phrase that refers to dedication to a task, instead of the specific act of remembering.
FAQs
How can I use "rack your brain" in a sentence?
You can use "rack your brain" to describe the act of trying hard to remember something or find a solution. For example, "I had to "rack your brain" to recall her name".
What does it mean to "rack your brain"?
To "rack your brain" means to strain your mind in an effort to remember something or solve a problem. It implies a considerable amount of mental effort.
Which is correct, "rack your brain" or "wrack your brain"?
"Rack your brain" is the more common and accepted form. While "wrack" has a similar meaning related to distress or torment, "rack" is the standard term used in this idiom.
What can I say instead of "rack your brain"?
You can use alternatives like "think hard", "search your memory", or "struggle to remember" depending on the context.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested