Did you know?

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

collide - 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 [intransitive] collide pronunciation in American English /kəˈlaɪd/
Word Forms
present tense
present participlecolliding
past tensecollided
past participlecollided
  • Facebook
  • Twitter
  1. 1
    if people or things collide, they crash into each other

    The two trains collided about a mile outside of the city.

    collide with:

    The truck collided with a row of parked cars.

  2. 2
    to find it impossible to agree about something
    collide with:

    It was the first time she had collided with Gordon’s mother over babysitting.

    1. a.
      if ideas or beliefs collide, they are very different and do not work together
      collide with:

      His religious beliefs often collided with the realities of his life.

    2. b.
      to meet or come together with something that is very different

      They lived in different worlds, which had now collided.



used to describe something which is done more carefully and over a longer period of time …

BuzzWord Article

Open Dictionary


the practice of giving birth in the presence of several friends and relatives

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