Did you know?

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

hack - 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.

Thesaurus diagram

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.

noun [countable]     hack pronunciation in American English
Word Forms
  1. 1
    informal a reporter, artist, or writer who does boring work or work that is not very good
  2. 3
    informal an old horse that is not easy or good to ride
  3. 4
    American informal a taxi driver
  4. From our crowdsourced Open Dictionary
    a clever solution to a tricky problem

    Reading children's books in a foreign language is a great hack to learn it.

    Submitted by Boris Marchenko from Russian Federation on 03/10/2014

deep learning

a form of machine learning which incorporates the use of neural networks

BuzzWord Article

Open Dictionary

snap election

a general election … that is called earlier than expected

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