/ ˈlaɪtn; NAmE / verb
1.
[ vn ] to reduce the amount of work, debt, worry, etc. that sb has
SYN lessen :
equipment to lighten the load of domestic work
The measures will lighten the tax burden on small businesses.
2.
to become or make sth become brighter or lighter in colour :
[ v ]
The sky began to lighten in the east.
[ vn ]
Use bleach to lighten the wood.
3.
lighten (sth) (up) to feel or make sb feel less sad, worried or serious
SYN cheer :
[ v ]
My mood gradually lightened.
[ vn ]
She told a joke to lighten the atmosphere.
4.
[ vn ] to make sth lighter in weight
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PHRASAL VERBS
- lighten up