I lightened my backpack by removing a large textbook.
Lighten the workload.
Lighten the mood.
The mood lightened when the party started.
To lighten an apartment with lamps or gas; to lighten the streets.
- to become less serious, angry, worried, concerned, etc.; take it easy
Idioms and Phrasal Verbs
Origin of lighten
- From light +"Ž -en.