Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “lighten”


verb [T] (MAKE NOT SERIOUS)   /ˈlɑɪ·tən/
to make someone or become happier and less anxious: Being with friends lightened her mood.
(Definition of lighten verb (MAKE NOT SERIOUS) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of lighten

Definitions of “lighten” in other dictionaries

Word of the Day


the skill with which something was made or done

Word of the Day


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