[ blur ]
See synonyms for: blurblurredblurring on

verb (used with object),blurred, blur·ring.
  1. to obscure or sully (something) by smearing or with a smeary substance: The windows were blurred with soot.

  2. to obscure by making confused in form or outline; make indistinct: The fog blurred the outline of the car.

  1. to dim the perception or susceptibility of; make dull or insensible: The blow on the head blurred his senses.

verb (used without object),blurred, blur·ring.
  1. to become indistinct: Everything blurred as she ran.

  2. to make blurs.

  1. a smudge or smear that obscures: a blur of smoke.

  2. a blurred condition; indistinctness: They could see nothing in the foggy blur.

  1. something seen indistinctly: The ship appeared as a blur against the horizon.

Origin of blur

First recorded in 1540–50; akin to blear

Other words for blur

Other words from blur

  • blur·red·ly [blur-id-lee, blurd-], /ˈblɜr ɪd li, ˈblɜrd-/, adverb
  • blur·red·ness, noun
  • blur·ring·ly, adverb
  • un·blurred, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use blur in a sentence

British Dictionary definitions for blur


/ (blɜː) /

verbblurs, blurring or blurred
  1. to make or become vague or less distinct: heat haze blurs the hills; education blurs class distinctions

  2. to smear or smudge

  1. (tr) to make (the judgment, memory, or perception) less clear; dim

  1. something vague, hazy, or indistinct

  2. a smear or smudge

Origin of blur

C16: perhaps variant of blear

Derived forms of blur

  • blurred, adjective
  • blurredly (ˈblɜːrɪdlɪ, ˈblɜːd-), adverb
  • blurredness, noun
  • blurriness, noun
  • blurry, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012