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
thin down
Grammar usage guide and real-world examplesUSAGE SUMMARY
"thin down" is an acceptable phrase in written English.
Generally, it means "to make a large amount smaller or more manageable" or "to reduce or weaken something". For example, "We need to thin down the list of applicants before we can begin interviewing."
✓ Grammatically correct
News & Media
Science
Wiki
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
23 human-written examples
Once cool, mix the mustard and mayonnaise together; thin down with a little water if it's too thick.
News & Media
Thin down by whisking in water, a tablespoon at a time, till the dressing has a creamy, trickling consistency.
News & Media
But in terms of a broad, varied range of books, widely available in a dedicated bookshop – well, Borders has gone, and Waterstone's (which has already announced it is losing 20 shops this year) could well have to thin down even further.
News & Media
Besides that, immunoblot with a total Tau antibody revealed a higher electrophoretic mobility visualized as a thin "down shift" of mutated 4RTau treated with λ-phosphatase (compared to untreated ones).
Science
There should NOT be a point, it should thin down as a board.
Wiki
This will help you thin down the amount of zombies that Lady Comstock raises.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
36 human-written examples
Tenements have been thinned down and tarted up.
News & Media
Linda Wagner-Martin's was much improved, though much thinned down, by my requiring her to substantiate the . . .
News & Media
Having thinned down from a three-piece to a duo, Gabriel Gurnsey and Nik Colk have taken the opportunity to rethink their sound.
News & Media
In the letter, and letters like this, we are shown how identity thins down as it moves towards the erasure we all eventually face.
News & Media
While working out on a treadmill, the actor wonders if she will be retrospectively thinned down by Star Wars' makers if her character Leia Organa should die and return as a "Force ghost".
News & Media
Expert writing Tips
Best practice
When using "thin down" in cooking contexts, specify the liquid you are using to achieve the desired consistency. For instance, "thin down the sauce with chicken broth" is more informative than just "thin down the sauce".
Common error
While "thin down" is acceptable, it can sound informal in certain academic or professional contexts. Consider using more precise terms like "reduce", "dilute", or "attenuate" for a more sophisticated tone.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrasal verb "thin down" primarily functions to describe the action of reducing the consistency of a substance, typically a liquid, by adding a thinning agent. As Ludwig AI indicates, it can also describe reducing the quantity of something. Ludwig's examples illustrate this usage in contexts like cooking and managing crowds.
Frequent in
Science
37%
News & Media
31%
Wiki
19%
Less common in
Formal & Business
4%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrasal verb "thin down" is a versatile term primarily used to describe the act of reducing the thickness or consistency of a substance, typically a liquid, or, to a lesser extent, the quantity of items in a group. Ludwig AI confirms its grammatical correctness. While the phrase is considered neutral in register and appears across various contexts including science, news, and general writing, more formal alternatives may be preferred in academic or professional settings. Best practice involves specifying the thinning agent for clarity, such as "thin down with water".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
reduce in thickness
Focuses on the physical reduction of thickness as an alternative.
dilute
Implies making a substance less concentrated or potent.
weaken
Highlights the reduction of strength or effectiveness.
lighten
Suggests making something less dense or heavy.
attenuate
Emphasizes a gradual reduction or weakening.
decrease
General term for making something smaller or less.
pare down
Suggests reducing something to its essential elements.
trim
Focuses on removing excess or unnecessary parts.
downsize
Indicates a reduction in size or scale, especially in business contexts.
streamline
Implies making something more efficient by removing unnecessary elements.
FAQs
How can I use "thin down" in a sentence?
You can use "thin down" to describe making a substance less viscous, like "thin down the paint with water". It can also mean reducing the number of something, such as "thin down the crowd". Be sure to tailor its use to the specific context.
What does "thin down" mean?
The phrase "thin down" means to reduce the thickness or consistency of something, often by adding a liquid. It can also refer to reducing the quantity or number of items in a group.
Which is correct, "thin down" or "thin out"?
What are some alternatives to "thin down"?
Depending on the context, you could use alternatives like "dilute", "reduce the thickness", "weaken", or "pare down". The best choice depends on what you are trying to convey.
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
4.1/5
Expert rating
Real-world application tested