Did you know?

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

careless - 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 careless pronunciation in American English /ˈkerləs/
  • Facebook
  • Twitter
  1. 1
    a careless person does not think about what they are doing, so they make mistakes, hurt people, or damage things
    Try not to be so careless next time!
    it was careless of someone: It was very careless of you to leave the medicine where the children could get it.
    1. a.
      used about someones actions
      a careless piece of work
      careless driving
  2. 2
    formal not thinking or worrying enough about something
    careless of/about: an administration that is careless of press freedom
  3. 3
    natural and relaxed
    a lazy, almost careless gesture
    a careless laugh
    Synonyms and related words
    1. a.
      old-fashioned carefree
      Synonyms and related words

derived words


 careless pronunciation in American English adverb


 careless pronunciation in American English noun [uncountable]


a fashion trend in which people intentionally wear ordinary, inexpensive, widely-available clothing

BuzzWord Article

Open Dictionary


a flower or small bunch of flowers worn on the lapel of a jacket on special occasions

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