/ ˈdɑːkən; NAmE ˈdɑːrk-/ verb
1.
to become dark; to make sth dark :
[ v ]
The sky began to darken as the storm approached.
[ vn ]
We walked quickly through the darkened streets.
a darkened room
2.
to make sb unhappy or angry; to become unhappy or angry :
[ vn ]
It was a tragedy that darkened his later life.
[ v ]
Her mood darkened at the news.
Luke's face darkened (= he looked angry) .
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IDIOMS
- never darken my door again