Did you know?

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

OD - 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.

verb [intransitive] informal     OD pronunciation in British English
/ˌəʊ ˈdiː/
Word Forms
present tense
present participleOD’ing
past tenseOD’d
past participleOD’d

Related words

  1. to take an overdose of a drug so that you become very ill or die
    OD on:

    Apparently she OD’d on sleeping pills.

    1. a.
      humorous to eat, drink, or do too much of something
      OD on:

      I have a tendency to OD on chocolate and cake.

Open Dictionary


a rise in the level of a stream or river

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