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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
on all fours
Grammar usage guide and real-world examplesUSAGE SUMMARY
"on all fours" is a correct and commonly used phrase in written English.
It is typically used to refer to an animal like a dog or a cat that is walking, crawling, or standing on all four feet. For example, "The puppy was running around on all fours and barking loudly."
✓ Grammatically correct
News & Media
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
58 human-written examples
Therestory is developing..
News & Media
In one she's seated spread eagle, in another she's on all fours.
News & Media
Crawling on all fours?
News & Media
He got down on all fours.
News & Media
She's never depicted on all fours.
News & Media
A skill still crawling on all fours.
News & Media
Then going up on all fours.
News & Media
What were you doing on all fours?
News & Media
And I got down on all fours like a cat.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
She keeps not doing the on-all-fours apey stuff.
News & Media
He's furry, walks on all-fours, and will eat anything.
News & Media
Expert writing Tips
Best practice
When describing movement, use "on all fours" to clearly indicate a quadrupedal gait, distinguishing it from simply being "down" or "prone".
Common error
Avoid using "on all fours" metaphorically when a literal description is needed; ensure the context clarifies whether the subject is physically in that position or if you are just referring to a state of submission.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on all fours" typically functions as an adverbial phrase or an adjectival phrase, modifying a verb or noun by describing a particular position or state. As confirmed by Ludwig AI, this phrase is widely accepted and understood.
Frequent in
News & Media
48%
Wiki
26%
Encyclopedias
4%
Less common in
Science
4%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "on all fours" is a grammatically sound and frequently used expression in English, as confirmed by Ludwig AI. Predominantly employed to describe a quadrupedal posture, it finds common usage across diverse contexts like News & Media and Wiki. While its register remains relatively neutral, it is crucial to ensure contextual clarity, avoiding ambiguity in its application. Related alternatives include "on hands and knees" and "in a quadrupedal position". Mastering the nuances of "on all fours" enriches descriptive writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
on hands and knees
This alternative directly replaces the phrase with a more descriptive term for the same posture.
on one's hands and knees
This alternative specifies body parts, describing posture in detail.
crawling on all limbs
This phrase emphasizes the act of crawling using all limbs, highlighting movement.
down on all fours
Adding "down" emphasizes the act of lowering oneself to that position.
in a quadrupedal position
This offers a more formal and technical description of the same posture.
all fours
A short version of the main query.
walking quadrupedally
Describes the manner of ambulation.
kneeling
Describes a posture of only using the knees.
prostrate
Emphasizing a submissive or vulnerable posture on the ground.
belly-down
Describes lying with the abdomen touching the ground.
FAQs
What does it mean to be "on all fours"?
Being "on all fours" means being in a position where one's hands and knees are on the ground, similar to how animals like dogs and cats typically stand or move.
When is it appropriate to use the phrase "on all fours"?
It is appropriate to use "on all fours" when describing someone or something in a crawling position, or when referring to animals that naturally walk that way. This can be in a literal or sometimes metaphorical context.
Are there alternative ways to say "on all fours"?
You can use alternatives like "on hands and knees" or "in a quadrupedal position" depending on the level of formality you want to convey.
Is "on all fours" grammatically correct?
Yes, "on all fours" is grammatically correct and a commonly used phrase in English. Ludwig AI confirms this.
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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