Did you know?

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

attachment - 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.

noun attachment pronunciation in American English /əˈtætʃmənt/
Word Forms
  • Facebook
  • Twitter
  1. 1
    [countable/uncountable] a feeling of loving or liking a person very much

    She formed no close attachments during her time in Boston.

    attachment to:

    He felt a particular attachment to his father’s family.

    1. a.
      a feeling of liking or supporting a place, idea, or organization
      attachment to:

      Regional firms need to lose their attachment to their regions to succeed.

  2. 2
    [countable] something you send with a letter, contract, or other document to give extra information
    1. a.
      a computer file that you send with an e-mail
  3. 3
    [countable] a special tool that you can fix to a machine or piece of equipment to make it do a particular job

    The food processor has an attachment for slicing vegetables.

  4. 4
    [uncountable] the process of fixing one thing to another

    The filter has suction cups for attachment to the side of the tank.



a title used before a man or woman's name as a gender-neutral alternative to Mr, Ms, etc

BuzzWord Article

Open Dictionary


another way of saying congratulations, or that something/someone looks nice or fascinating

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