Did you know?

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

jar - 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.



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 jar pronunciation in American English /dʒɑr/
Word Forms
present tense
present participlejarring
past tensejarred
past participlejarred
  • Facebook
  • Twitter
  1. 1
    [intransitive/transitive] to push something firmly and suddenly against something else, usually accidentally
    I must have jarred my shoulder playing basketball.
  2. 2
    [intransitive] to be inappropriate in an unpleasant way in a particular place or situation
    jar with: One of his comments jarred with the informality of the occasion.
  3. 4
    [intransitive/transitive] to make someone feel uncomfortable or slightly annoyed
    jar on: Some of the expressions he used jarred on me.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

BuzzWord Article

Word of the Day


a stupid person

Open Dictionary


an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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