1
as in thin
being of less than usual width
a hairline crack in the mug, almost too small to notice, was enough to make the mug break when filled with hot tea
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in subtle
made or done with extreme care and accuracy
a hairline distinction between her rating of certain things as "necessary" and others as "absolutely necessary"
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in mathematical
meeting the highest standard of accuracy
an ultrasensitive telescope that requires hairline placement of the lenses
Synonyms & Similar Words
Antonyms & Near Antonyms
as in inch
a very small distance or degree
the controversial measure passed by a hairline, the margin of victory being but a single vote
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of hairline
Emily Longeretta, Variety, 3 Sep. 2025
His clinic is renowned for providing the best care, specializing in natural hairline design and minimally invasive FUE and DHI treatments.
—Matt Emma, USA Today, 27 Aug. 2025
It can be used along the scalp, hairline, and part lines—not just the face.
—Lauren Dana Ellman, Travel + Leisure, 23 Aug. 2025
Ticks are small, blood-sucking parasites that latch onto humans and animals, often hiding in skin folds, hairlines or even eyelashes.
—Daniella Gray, MSNBC Newsweek, 23 Aug. 2025
See All Example Sentences for hairline
Noun
Pelphrey leaned into the look, with Ingelsby’s encouragement, especially because of his roots — the East Coast ones, not his hairline.
—Emily Longeretta, Variety, 3 Sep. 2025
His clinic is renowned for providing the best care, specializing in natural hairline design and minimally invasive FUE and DHI treatments.
—Matt Emma, USA Today, 27 Aug. 2025
It can be used along the scalp, hairline, and part lines—not just the face.
—Lauren Dana Ellman, Travel + Leisure, 23 Aug. 2025
Ticks are small, blood-sucking parasites that latch onto humans and animals, often hiding in skin folds, hairlines or even eyelashes.
—Daniella Gray, MSNBC Newsweek, 23 Aug. 2025
See All Example Sentences for hairline
Recent Examples of Synonyms for hairline
Adjective
-
Leaders who pay attention to these lessons now will be best prepared to thrive in a world where the boundaries between Earth and orbit are becoming ever thinner.—
Bernard Marr,
Forbes.com,
12 Sep. 2025
-
The water pressure then causes the vehicle to rise and slide on a thin layer of water between the tires and the road, making the driver lose control.—
CA Weather Bot,
Sacbee.com,
11 Sep. 2025
Adjective
-
His celebration was subtle yet suave, a drop of his bat with a flick of his wrist.—
Justice delos Santos,
Mercury News,
13 Sep. 2025
-
This is clearly a quick screen and may not pick up more subtle issues.—
Bruce Y. Lee,
Forbes.com,
13 Sep. 2025
Adjective
-
Researchers have successfully used a quantum algorithm to solve a complex century-old mathematical problem long considered impossible for even the most powerful conventional supercomputers.—
Aman Tripathi,
Interesting Engineering,
11 Sep. 2025
-
Jose Salazar is in his second year at Davis pursuing a doctorate degree in mathematical atmospheric sciences.—
Graham Womack,
Sacbee.com,
11 Sep. 2025
Noun
-
The 9-inch monochrome CRT was retained, but the floppy drive no longer had a door, and the keyboard was extended with several special keys.—
Cameron Kaiser,
ArsTechnica,
12 Sep. 2025
-
Add 2 inches of organic mulch around the base to retain moisture.—
Karen Brewer Grossman,
Southern Living,
12 Sep. 2025
Adjective
-
Students have a narrow window to unlock access to training that could dramatically shape their post-grad trajectory.—
Cheryl Robinson,
Forbes.com,
14 Sep. 2025
-
For decades, OPOs have been bulky systems with narrow ranges.—
Neetika Walter,
Interesting Engineering,
13 Sep. 2025
Adjective
-
At breakfast, expect Okinawan-style waffles with sweet red beans, Vietnamese pho, and delicate local tofu.—
Kaila Yu,
Forbes.com,
12 Sep. 2025
-
The rising sun turned the snow a delicate pink, and beads of frost glittered like diamonds on the trees.—
Jack Atcheson Sr. as told to Michael Hanback,
Outdoor Life,
11 Sep. 2025
Adjective
-
Customer service and tech support will provide faster resolutions and more accurate answers.—
Hugh Cameron,
MSNBC Newsweek,
17 Sep. 2025
-
That volume of data is impractical to fit theoretical models to deliver large-scale, accurate predictions.—
Robert Lea,
Space.com,
16 Sep. 2025
Noun
-
Inspired by the Japanese treat both in formula and texture, the Iota Supermochi Body Exfoliator+ contains soothing sweet rice water and exfoliating red bean extract—alongside ingredients like lactic acid, sea salt, and urea—to gently resurface your skin from the neck down.—
Sophia Panych,
Allure,
16 Sep. 2025
-
Winter Wools Nothing feels sharper or warmer than a funnel-neck coat made of warm wool.—
Andrea Zendejas,
Vogue,
16 Sep. 2025
Cite this Entry
“Hairline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hairline. Accessed 17 Sep. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share