Synonyms of hairline

hairline 1 of 2

adjective

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

• thin
• narrow
• slender
• skinny
• fine
• slim
• ultrathin
• close
• linear
• needlelike
• tight
• paper-thin
• elongate
• spare
• tightened
• compressed
• wispy
• slim-jim
• squeezed
• condensed
• attenuated
• stringy
• reedy
• spindly
• lanky
• lank
• willowy
• contracted
• constricted
• attenuate
• rangy
• twiggy
• bottleneck
• stalky
• shoestring

Antonyms & Near Antonyms

• wide
• broad
• fat
• thick
• thickset
• squat
• stocky
• stumpy
• chunky
• massive
• voluminous
• bulky
• thickish
• widish

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

• subtle
• delicate
• fine
• exact
• nice
• minute
• hairsplitting
• refined
• nuanced
• meticulous
• finespun
• petty
• trivial
• particular
• exacting
• trifling
• negligible
• insignificant
• nitpicking
• inconsiderable
• inconsequential
• finical
• fastidious
• frivolous
• piddling
• quibbling
• demanding
• finicking
• finicky
• fussy
• picky

Antonyms & Near Antonyms

• coarse
• apparent
• rough
• obvious
• evident
• plain
• clear
• inexact
• unmistakable
• transparent
• broad
• manifest
• palpable
• unequivocal
• indefinite
• unambiguous
• patent
• clear-cut
• careless
• sloppy
• open-and-shut
• perspicuous
• heedless
• slipshod
• incautious
• slapdash

3

as in mathematical

meeting the highest standard of accuracy

an ultrasensitive telescope that requires hairline placement of the lenses

Synonyms & Similar Words

• mathematical
• accurate
• precise
• close
• fine
• exact
• correct
• delicate
• rigorous
• pinpoint
• careful
• refined
• strict
• definite
• right
• spot-on
• definitive
• subtle
• true
• meticulous
• finical
• nice
• fastidious
• finicky

Antonyms & Near Antonyms

• coarse
• round
• approximate
• rough
• wrong
• false
• loose
• inaccurate
• inexact
• incorrect
• careless
• indefinite
• imprecise
• vague
• unclear
• questionable
• doubtful
• untrue
• dubious
• unreliable
• untrustworthy

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

• inch
• hair
• neck
• step
• hairbreadth
• bit
• ace
• shouting distance
• stone's throw
• hop, skip, and jump
• trifle
• smidgen
• minim
• dab
• particle
• iota
• mite
• trace
• jot
• crumb

Antonyms & Near Antonyms

• mile
• long haul
• infinity
• country mile
• light-year

Example Sentences

Recent Examples of hairline

Noun

Rounded Messy Bob To achieve a bob with lots of body, Hawkins suggests blowing out your hair and leaving a little natural texture at the hairline. — Omenaa Boakye, InStyle, 13 Aug. 2026

Pale gray text on white, hairline fonts and tiny touch targets photograph beautifully but exclude anyone with imperfect vision, older hands or bright sunlight. — Expert Panel®, Forbes.com, 12 Aug. 2026

Over time, details such as the clinic’s branding, pricing, and social media presence may become less significant than the appearance of the hairline, the condition of the donor area, and the patient’s satisfaction with the result. — Connie Etemadi, USA Today, 10 Aug. 2026

Tucker sustained a hairline fracture in his right hand during a slide into second base against the Cincinnati Reds on June 1 last year, Cubs manager Craig Counsell confirmed to ESPN at the time. — Skyler Caruso, PEOPLE, 4 Aug. 2026