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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
hair
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "hair" is correct and usable in written English, depending on the context.
You can use it when referring to the strands that grow from the skin of humans and animals, or in discussions about hairstyles, grooming, or biology. Example: "She decided to dye her hair a vibrant shade of blue for the summer."
✓ Grammatically correct
News & Media
Lifestyle
Fashion
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
You can clearly see the speed and assurance of Schiele's execution, the uninhibited flow of the hand, denoting – in a few quick seconds of activity – tumbling curls of hair or crumpled fabric, or the fluid confluence of flank and hip and thigh.
News & Media
Three women who work at a hair care shop testified that they heard Kaarma say that same day that he had been waiting up nights to shoot an intruder.
News & Media
"What, we're supposed to call his cousin?" A large man in front of me with graying hair sounds relieved: "I thought I was the only one who thought this whole thing is ridiculous".
News & Media
He's been in DIY bands since the early 90s, is missing teeth as well as most of his hair, and is wearing a T-shirt that says Dinosaurs Are Wankers.
News & Media
All his new team-mates thought their coach was joking – "You would be hard-pressed to think anything other than that the hair dye had finally seeped into Kevin Squire's brain," one told the North Devon Journal – but, sure enough, Collins bought himself a new pair of boots and featured at No8 against a rather startled Newton Abbot.
News & Media
Barack Obama / [No subject] - We should grow some kickass facial hair.
News & Media
For weeks, even months, they would refuse shampoo, resulting in hair that emitted cheap cider and bong fumes wherever they went and gradually became lanker, greasier and flatter.
News & Media
I dragged it by the hair to the surface, it was my friend's daughter.
News & Media
A handful of objects including a Victorian cast of the head of a hanged man and a delicate lace pillow embroidered with her own hair by a woman arrested hundreds of times for public drunkenness have left one of the most private collections in the world for the first time, for the first public exhibition from the Black Museum of the Metropolitan police.
News & Media
Which then means other religions can legitimately press the ruling elite for their bit of power, their strand of hair.
News & Media
"They're common signs and some women notice excess hair and weight gain.
News & Media
Expert writing Tips
Best practice
When describing someone's "hair", be specific. Instead of just saying "hair", use descriptive adjectives like "curly hair", "long hair", or "red hair" to provide a clearer picture.
Common error
Remember that "hair" is generally an uncountable noun. Avoid saying "hairs" unless you're referring to individual strands. Instead of "She has many hairs on her coat", say "She has a lot of hair on her coat".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The noun "hair" functions as a countable noun when referring to individual strands and an uncountable noun when referring to the mass of filaments growing from the skin. Ludwig's examples show its role as a descriptor and subject in sentences.
Frequent in
News & Media
50%
Lifestyle
25%
Fashion
10%
Less common in
Science
5%
Formal & Business
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, "hair" is a versatile noun that can be used in various contexts to describe physical appearance, grooming habits, and even cultural or social identity. According to Ludwig, the examples show that its most frequent use is in News & Media, Lifestyle and Fashion contexts, with a neutral register making it suitable for both formal and informal communication.
As Ludwig AI confirms, "hair" is grammatically correct. Pay attention to avoiding the use of "hairs" except when referring to individual strands. Overall, understanding the subtle nuances of "hair" can greatly enhance the clarity and precision of your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
hairstyle
A general term for the way hair is arranged or styled.
head of hair
Emphasizes the quantity or fullness of the hair.
hairdo
An informal term for hairstyle
locks
Similar to "tresses", but can also refer to individual strands or sections of hair.
tresses
Refers to long flowing locks of hair, often associated with a romantic or poetic style.
hair texture
Focuses on the physical feel and appearance of the hair (e.g., curly, straight, wavy).
mane
Often used to describe a thick, full head of hair, reminiscent of a lion's mane.
hair color
Highlights the specific shade or dye of the hair.
coiffure
Refers specifically to a hairstyle, often an elaborate or formal one.
hair condition
Refers to the health and state of the hair (e.g., dry, oily, damaged).
FAQs
How can I describe someone's hair in more detail?
Use adjectives to specify color (e.g., "blonde hair", "brown hair"), texture (e.g., "curly hair", "straight hair"), and length (e.g., "long hair", "short hair").
Is it correct to say "hairs" instead of "hair"?
In most cases, "hair" is an uncountable noun and should be used in its singular form. "Hairs" is only appropriate when referring to individual strands.
What are some synonyms for "hair" in a sentence?
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested