Did you know?

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

fly - definition and synonyms

 
 
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. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

more
noun [countable] fly pronunciation in British English /flaɪ/
Word Forms
Close
singularfly
pluralflies
  1. 1
    a common small insect with wings. Flies eat food, are often found near rubbish, and are responsible for spreading many diseases
    A trapped fly buzzed against the window pane.
    a new spray to kill flies and mosquitoes
    a swarm/cloud/plague of flies: There were clouds of small flies over the river.
    Synonyms and related words
  2. 4
    mainly American the flies on a pair of trousers
    Synonyms and related words

phrases

JOMO

… a feeling of pleasure you get from spending time doing what you want and not worrying about what other people are doing or saying

BuzzWord Article

Open Dictionary

brain fade

a temporary inability to think clearly or remember information

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