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

No more missing a hairline movement in the shadows and losing your edge! — Kelsey Fogarty, PC Magazine, 3 Nov. 2026

To ensure a seamless, natural-looking dye job, Monzillo recommends using a little bit of Vaseline on and around your hairline to prevent any color lines from sticking around. — Jennifer Hussein, Allure, 1 Nov. 2026

At the hospital, the doctor draws the hairline by hand, and the final line is decided together with the patient before any part of the procedure begins. — Kaitlyn Gomez, Sacbee.com, 30 Oct. 2026

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