Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “loosen”

loosen

verb uk   /ˈluː.sən/ us  

loosen verb (NOT FIXED)

C2 [I or T] to (cause to) become loose: The screws holding the bed together had loosened.Unfastening and opening

loosen verb (LESS TIGHT)

[T] to make something such as your hair or a piece of clothing less tight: He loosened his tie.Unfastening and opening
(Definition of loosen from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of loosen?
Add Cambridge dictionaries to your browser to your website

Definitions of “loosen” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

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