Did you know?

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

seizure - 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     seizure pronunciation in British English
Word Forms
  1. 1
    [countable/uncountable] the action of taking something or taking control of something, especially using power or force
    seizure of:

    the seizure of the British embassy

    drug/weapons seizure:

    The government has made a record number of drug seizures this year.

  2. 2
    [countable] medical a sudden attack of a disease such as epilepsy that makes your body shake. A more informal word for this is a fit

    The patient had a seizure after being injected with the wrong drug.

    an epileptic seizure

quiz invitation


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

BuzzWord Article

Word of the Day


relating to marriage

Open Dictionary

patio diplomacy

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

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