Did you know?

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

open up

 - definitions and thesaurus
Close

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.

Close

Thesaurus

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.

more
phrasal verb
Word Forms
Close
present tense
I/you/we/theyopen up
he/she/itopens up
present participleopening up
past tenseopened up
past participleopened up

Related meanings

  1. 1
    [intransitive/transitive] to open a locked door, container, or building

    He opens up the drugstore every morning.

    Open up! This is the police!

  2. 2
    [intransitive] to talk more about your personal feelings and experiences
    open up to:

    It’s taken a few months, but Katy is now starting to open up to me.

  3. 3
    [intransitive/transitive] if something opens up or you open it up, it opens from a folded position so that you can see its shape

    Look, the rose buds are beginning to open up.

    I opened up a folding chair for my grandmother.

  4. 4
    [intransitive/transitive] if a discussion opens up, or if you open it up, it becomes more general or starts to include more subjects

    I think we need to open up the discussion and ask members of the audience for their opinions.

  5. 5
    [intransitive/transitive] to make it easier to travel or do business in a country

    The building of canals opened up the interior of the country.

    open up to:

    China is opening up to foreign investment.

  6. 6
    [intransitive/transitive] to create a new opportunity or possibility

    Going freelance opens up all sorts of possibilities to you.

    New markets are opening up every day.

  7. 7
    [intransitive/transitive] to create a difference between the people or groups involved in something

    The issue of immigration has opened up deep divisions within the party.

    The Braves have opened up a three game lead over the second-place team.

  8. 8
    [intransitive] to start shooting a gun

    He opened up on the crowd with an automatic rifle.

  9. 9
    [transitive]open someone up informal to cut into someones body for medical reasons

    When they opened her up they found a huge tumor.

  10. 10
    [intransitive/transitive] same as open2 (sense 5)

    Donald wants to retire and open up a bookstore.

  11. 11
    [intransitive/transitive] if something opens up, or if you open it up, it opens from a folded position so that you can see its shape

    The rose buds are beginning to open up.

    She opened her umbrella up at the first drops of rain.

See also main entry: open

SOLE

… a teaching method in which groups of children learn independently using a computer linked to the internet

BuzzWord Article

Word of the Day

ruck

a fight

Open Dictionary

bankster

a derogatory word used for referring to people in the banking and investment industry who are thought of as taking serious risks in order to increase their own earnings …

add a word

Blog

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