Did you know?

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

retrofit  - 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] retrofit pronunciation in British English /ˈretrəʊˌfɪt/
Word Forms
present tense
present participleretrofitting
past tenseretrofitted
past participleretrofitted
  1. to change or improve something such as a machine or a building by adding new parts, equipment, or features to it

derived word


 retrofit pronunciation in British English noun [countable]
Word Forms

bit rot

when electronic information is lost because the software or devices needed to read it are no longer available

BuzzWord Article

Open Dictionary

troll factory

a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

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