HAIRLINE Synonyms: 163 Similar and Opposite Words

hairline 1 of 2

adjective

Definition of hairline

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

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

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

hairline

2 of 2

noun

ˈher-ˈlīn

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

Noun

The hairline, donor area, existing density and possible future thinning all need to fit together. — Ascend Agency, The Orlando Sentinel, 25 Sep. 2026 Avoid applying too close to the hairline or along the forehead to prevent clogged pores and irritating acne-prone skin. — Emily Hayes, Martha Stewart, 17 Sep. 2026 Johnson really went on a run of clocking this man’s hairline. — Bethy Squires, Vulture, 11 Sep. 2026 The hygienist told me there were hairline fractures along the tops of my teeth. — Literary Hub, 9 Sep. 2026 See All Example Sentences for hairline

Recent Examples of Synonyms for hairline

Adjective

BioNxt Solutions is developing a sublingual semaglutide thin-film platform and reported moving its program into active pharmaceutical development in 2026.

— Samantha Agate, Charlotte Observer, 8 Oct. 2026
The launch shows that Innovera can be cut into thin strips and woven without immediately losing its structure.

— Alexandra Harrell, Footwear News, 8 Oct. 2026

Definition of thin

Adjective

Poindexter featured his three daughters in his first campaign advertisement for the general election, taking a subtle dig at Miller.

— Lauren Green, The Washington Examiner, 7 Oct. 2026
Later still, we are introduced to Satoko Iijima (Ishida), who again shares many defining features with her two namesakes, albeit with just enough subtle differences to keep the audience on the back foot.

— James Marsh, Variety, 7 Oct. 2026

Definition of subtle

Adjective

The mathematical problems that made RSA and elliptic-curve cryptography secure—specifically, the difficulty of factoring large numbers and solving discrete logarithms—are threatened by advances in quantum computing.

— Amit Sinha, Forbes.com, 5 Oct. 2026
The incentive structures that power the mathematical community are not set up for a world where solving problems is easy and understanding their answers remains hard.

— Jordana Cepelewicz, Quanta Magazine, 5 Oct. 2026

Definition of mathematical

Adjective

Despite steady attacks from Iran, oil tankers and other commercial vessels have continued flowing through the narrow waterway.

— Jason Ma, Fortune, 10 Oct. 2026
Acton holds a narrow edge over Republican firebrand Vivek Ramaswamy, while Kaptur is contending with a tough reelection battle after Ohio Republicans redrew the boundaries of the longtime congresswoman’s district to pull in more GOP voters.

— Mia Cathell, The Washington Examiner, 9 Oct. 2026

Definition of narrow

Adjective

Try a cider flight to experience several of Seminary Hill’s delicate and impressive ciders which range from semi-dry to dry and from still to sparkling.

— Condé Nast, Condé Nast Traveler, 9 Oct. 2026
But Democrats don’t have to share the spotlight with the president, so their balancing acts are not as delicate as those confronting their Republican opponents.

— Julio Borquez, The Conversation, 8 Oct. 2026

Definition of delicate

Adjective

An in-home assessment can help identify which windows require replacement and provide more accurate project pricing.

— Samantha Agate, Miami Herald, 5 Oct. 2026
Athletic directors and coaches have been scrambling to make sure players are eligible and parental paperwork is accurate.

— Eric Sondheimer, Los Angeles Times, 5 Oct. 2026

Definition of accurate

Noun

Boat trips to Capri and Positano are on the doorstep, as are hair-raising Vespa tours on hairpin roads and private visits to Pompei and Herculaneum.

— Condé Nast, Condé Nast Traveler, 6 Oct. 2026
In the comments, some followers pointed out how Eilish now has the same hair color as her older sibling and longtime collaborator.

— Hannah Dailey, Billboard, 6 Oct. 2026

Definition of hair

Browse Nearby Words

hairlike

hairline

hairlines

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Style

“Hairline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hairline. Accessed 12 Oct. 2026.

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Synonyms of hairline

adjective

noun

Example Sentences

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