blur

1 of 2

noun

ˈblər 

1

: a smear or stain that obscures

2

: something vaguely or indistinctly perceived

The words are just a blur without his glasses.

The whole weekend is a blur to me.

especially : something moving or occurring too quickly to be clearly seen

passed by in a blur of motion

blur

2 of 2

verb

blurred; blurring

transitive verb

1

: to obscure or blemish by smearing

windows blurred by fingerprints

2

: sully

… an act that blurs the grace and blush of modesty.

—Shakespeare

3

: to make dim, indistinct, or vague in outline or character

His vision was blurred.

digitally blur the edges of photographs

blurring the line between fact and fiction

4

: to make cloudy or confused

time had begun to blur her senses

—W. A. White

intransitive verb

1

a

: to make blurs

… the moths tapped and blurred at the window screen …

—R. P. Warren

b

: move too quickly to be seen clearly

… it's like the … ride of a traveling carnival, with eerie lights and sharp turns on the rails and the odd unsettling image that blurs past you.

—Adrian McKinty

2

: to become vague or indistinct

distinctions between the two are beginning to blur

blurringly

ˈblər-iŋ-lē 

adverb

Synonyms

Verb

• becloud
• befog
• cloud
• confuse
• fog
• muddy
• obfuscate

Examples of blur in a Sentence

Verb

The tears in my eyes blurred the words on the page.

His novel is based on historical occurrences but it blurs the line between fact and fiction.

The two events have blurred together in my mind.

Recent Examples on the Web

Noun

To achieve these unprecedented views, Cona uses a mirror that reshapes itself 2,200 times per second to compensate for the blur caused by air turbulence. —Elizabeth Gamillo, Smithsonian Magazine, 4 June 2025

There are new responsibilities to take on, and the early days are a blur—thanks to hormonal shifts and sleep deprivation. —Kimberly Zapata, Parents, 22 May 2025

Verb

The 2025 Tribeca Film Festival, running through June 15, has centered music-heavy programming with premieres from artists including Billy Joel, Miley Cyrus, Turnstile and Depeche Mode — further blurring the line between musicians’ stagewear and red carpet fashion. —Maggie Clancy, Footwear News, 7 June 2025

Airstream In place of common overhead cabinetry, Airstream further blurs the delineation between indoors and out with long, narrow upper windows above the primary window line. —New Atlas, 7 June 2025

Word History

Etymology

Noun and Verb

perhaps akin to Middle English bleren to blear

First Known Use

Noun

1519, in the meaning defined at sense 1

Verb

1520, in the meaning defined at transitive sense 1

Rhymes for blur

• birr
• bur
• cur
• er
• fir
• fur
• furr
• gurr
• her
• murr
• myrrh
• per

Kids Definition

blur

1 of 2 noun

ˈblər 

1

: a smear or stain that dims but does not completely cover

2

: something vague or lacking definite outline

blurry

-ē

adjective

blur

2 of 2 verb

blurred; blurring

1

: to make hard to see or read by smearing

2

: to make or become vague or unclear