Did you know?

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

assert - 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 [transitive] assert pronunciation in British English /əˈsɜː(r)t/
Word Forms
present tense
present participleasserting
past tenseasserted
past participleasserted
  • Facebook
  • Twitter
  1. 1
    to state firmly that something is true
    He has continued to assert his innocence.
    assert (that): The governor asserted that no more money would be available.
    1. a.
      to speak or behave in a firm, confident way
      She always manages to assert her point of view.
      assert yourself (=to state your opinion firmly and confidently): Don’t be so shy – you need to learn to assert yourself.
  2. 2
    to claim that you have the right to do something or behave in a particular way
    This system discourages people from asserting their rights in court.
    He quickly asserted his authority as a leader.
    It’s hard for shy people to assert themselves in a group.
  3. 3
    if a fact, idea, or tendency asserts itself, it begins to influence someone or something
    After a while her old bad habits began to assert themselves.


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