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

Scandinavian Biolabs Bio-Pilixin® hairline booster A six-ball rollerball filled with plant exosomes and stem cells that targets hair loss at the corners and temples, with zero mess nor stickiness. — Anita Bhagwandas, Condé Nast Traveler, 28 Sep. 2026 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 See All Example Sentences for hairline

Recent Examples of Synonyms for hairline

Adjective

Bajaria may also have hit thin ice with Sarandos after the streamer won just 16 Primetime Emmy Awards this year — its worst showing since 2016 and down from 30 in 2025.

— Matt Donnelly, Variety, 16 Oct. 2026
It was designed with a column, sheath silhouette, with sequins, thin spaghetti straps and a midlength skirt.

— Karla Rodriguez, Footwear News, 15 Oct. 2026

Definition of thin

Adjective

Coleman said each design has its own distinct character and can be styled individually, either as a subtle everyday detail or a sculptural statement.

— Tianwei Zhang, Footwear News, 15 Oct. 2026
As the researchers saw, introducing random mutation could still make subtle structural tweaks that produced enzymes that were considerably more active.

— ArsTechnica, ArsTechnica, 14 Oct. 2026

Definition of subtle

Adjective

Using a universal mathematical framework, the researchers treated thermalization as a process that can bring different quantum systems into their corresponding thermal states.

— Ameya Paleja, Interesting Engineering, 20 Oct. 2026
Finding the right family required obscure mathematical objects called metaplectic forms, which Dunn has spent the past five years studying.

— Quanta Magazine, Quanta Magazine, 19 Oct. 2026

Definition of mathematical

Adjective

The decision to set that tone staggering through all 10 minutes of the extended cut might scan as raw inspiration, placing Spacemen 3 on a narrow band from La Monte Young and Terry Riley to some brilliant dro)))ne future.

— Gabriel Szatan, Pitchfork, 18 Oct. 2026
Recent polls have shown Jackson holding only a narrow lead over Democrat Keisha Lance Bottoms.

— DEMOCRAT-GAZETTE STAFF FROM WIRE REPORTS, Arkansas Online, 17 Oct. 2026

Definition of narrow

Adjective

State officials said the isolated instances of noncitizens voting, if accurate, are not evidence of widespread voter fraud.

— Kevin Rector, Los Angeles Times, 20 Oct. 2026
To make good decisions, consumers need to rely on accurate information, but much of the hype around peptides is misleading.

— Amy Maxmen, Miami Herald, 19 Oct. 2026

Definition of accurate

Noun

Each fragrance is available as a $49 eau de parfum; a $25 body, hair and linen mist; a $20 solid fragrance that doubles as a bag charm, and a $10 scented candle.

— Ryma Chikhoune, Footwear News, 20 Oct. 2026
However, not long after production wrapped on season two, hair colorist Miichelle Sharma revealed that Abdalla has officially ditched her character’s blonde ribbons for a double-chocolate brunette that’s perfect for fall.

— Emily Tannenbaum, Glamour, 20 Oct. 2026

Definition of hair

Browse Nearby Words

hairlike

hairline

hairlines

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Cite this Entry

Style

“Hairline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hairline. Accessed 21 Oct. 2026.

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Synonyms of hairline

adjective

noun

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