Did you know?

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

invalid - 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
ThesaurusThesaurus
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.

more
noun [countable]     invalid pronunciation in British English
/ˈɪnvəlɪd/
Word Forms
Close
singularinvalid
pluralinvalids
  1. someone who is ill or injured and is unable to look after themselves

    He had been an invalid for many years.

    1. a.
      [only before noun] relating to someone who is ill or injured, especially permanently

      He lives with his invalid mother.

quiz invitation
BuzzWord

Hamdog

a combination of a hotdog and a hamburger in a specially designed bread bun

BuzzWord Article

Open Dictionary

patio diplomacy

high-level diplomats meeting and dining in an informal environment e.g. a party or club

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
Macmillan learn live love play