0 past simple and past participle of lighten --
2 to make a difficult situation or responsibility easier: --
Getting a new assistant will lighten (= reduce) the workload considerably.
3 to make something lighter: --
It has lightened the work of the men—and heaven knows they wanted some easement it their labour in the pits!
This was a compromise figure, which lightened the burden on applicants while still preserving the rights of tenants with a substantial interest.
As a result our task has been lightened and our ways made more pleasant.
The restrictions on gas/diesel oil can now be lightened.
In many ways it may have been too hard and it has been lightened, brightened and expanded nowadays.
The burden of taxation on the workers, taking into account the increase of population which has taken place, has been lightened since 1906.
I should like to see the taxes on the workers again lightened by a further remission of duties on tea and sugar.
The cognitive load involved in keeping track of the sequence of events may be lightened when other cues are present which generally correlate with different times.