Did you know?

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

toxic - 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.

adjective toxic pronunciation in American English /ˈtɑksɪk/
  1. 1
    poisonous and harmful to people, animals, or the environment
    highly toxic industrial chemicals
  2. 3
    used about a subject on which opinion is so strongly divided that it is hard to have a reasonable discussion about it
    Based on research, we have learned that these are six of the most common toxic subjects for couples.
    the increasingly toxic debate around welfare

derived word


 toxic pronunciation in American English /tɑkˈsɪsəti/ noun [uncountable]


… 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


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