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

Black oval gemstones formed the shape of the letter M, with the tips reaching her hairline before descending to follow the initial curve of her cheekbones. — Arushi Jacob, Footwear News, 28 Oct. 2026

There are subtle visible differences, like her hairline, nose and fingernails. — Maira Garcia, Los Angeles Times, 20 Oct. 2026

The entire apparatus is like an MRI machine that is expected to scan hairline fractures in the middle of a violent plane crash. — Gideon Lewis-Kraus, New Yorker, 19 Oct. 2026

In my case, and most commonly, gray hair appears at the temples and hairline. — Ellie Davis, Vogue, 8 Oct. 2026