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

Reapplying sunscreen every two hours is the rule almost nobody follows, especially over makeup, on the go or across a hairline that’s already been styled. — Lauren Jarvis-Gibson july 1, Charlotte Observer, 1 July 2026

That’s why dermatologists increasingly recommend powder sunscreen for the scalp and hairline. — Lauren Jarvis-Gibson, Sacbee.com, 1 July 2026

The same physician who designs the hairline at the morning consultation is still in the room placing grafts in the afternoon. — Ascend Agency, Denver Post, 18 June 2026

In most Istanbul clinics, the surgeon designs the hairline and then hands the remainder of the procedure to technicians. — Ascend Agency, Mercury News, 18 June 2026