Did you know?

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

upthrust - 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     upthrust pronunciation in British English
Word Forms
  1. 1
    [uncountable] physics the force that a liquid or gas directs upwards on an object that is floating on it
  2. 2
    [countable/uncountable] a large piece of rock that has moved upwards in a crack in the Earth’s surface

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