Did you know?

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

impossible

 - definition
 
 
 
Close

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.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

more
adjective British English pronunciation: impossible /ɪmˈpɒsəb(ə)l/
  1. 1
    if something is impossible, no one can do it or it cannot happen

    We were faced with an impossible task.

    it is impossible to do something:

    It would be impossible to gather this information without using computers.

    1. a.
      extremely difficult to do or to deal with

      The job makes impossible demands on your patience.

      be impossible to do something:

      This book is impossible to read without crying.

      make something impossible:

      Dealing with her illness makes life pretty impossible for the rest of the family.

phrase

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

BuzzWord Article

Word of the Day

spinnaker

an extra sail sometimes fitted on the front of a boat used for racing

Open Dictionary

subtweet

to post a tweet, usually a negative one, that mentions a person without using the @ sign, so that they will not see the message on their Twitter feed …

add a word

Blog

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