Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “open (sth) up”

open (sth) up

phrasal verb with open     /ˈəʊ.pən/ US  /ˈoʊ-/ verb
to open the lock on the door of a building: The caretaker opens up the school every morning at seven.Unfastening and opening
(Definition of open (sth) up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of open (sth) up

Translations of “open (sth) up”

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More