Did you know?

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


 - definitions and thesaurus

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.

adjective unfamiliar pronunciation in British English /ˌʌnfəˈmɪljə(r)/
  1. if you are unfamiliar with something, you have no knowledge or experience of it
    unfamiliar with:

    The joke would not be understood by readers unfamiliar with Jewish tradition.

    1. a.
      used about things that you have no knowledge or experience of

      feelings of nervousness at being in unfamiliar surroundings

      unfamiliar to:

      The rules of the game are quite unfamiliar to most people.

derived word


 unfamiliar pronunciation in British English /ˌʌnfəˌmɪliˈærəti/ noun [uncountable]


… a teaching method in which groups of children learn independently using a computer linked to the internet

BuzzWord Article

Open Dictionary


a derogatory word used for referring to people in the banking and investment industry who are thought of as taking serious risks in order to increase their own earnings …

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