Did you know?

Click any word in a definition or example to find the entry for that word

blur - definition and synonyms


What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



Thesaurus diagram

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

verb [intransitive/transitive]     blur pronunciation in British English
Word Forms
present tense
present participleblurring
past tenseblurred
past participleblurred

Related words

  1. 1
    if a thing blurs, or if something blurs it, it becomes difficult to see it clearly, often because its edges are not clear

    With eyesight as poor as mine, faces blur into featureless ovals.

    The paper had got wet and blurred the ink.

  2. 2
    if the difference between two things blurs, or if something blurs it, they become more similar, so that you are no longer sure that they are clearly different
    blur the line/difference/distinction between:

    Their adverts blur the line between art and advertising.

  3. 3
    if something such as a memory or an idea has blurred, or if something has blurred it, it is no longer clear in your mind
quiz invitation


a description of an economic or political situation based on analysis of information at the present time

BuzzWord Article

Open Dictionary


an unregulated form of capitalism that features financial deregulation, privatisation and low tax for high earners

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play