dark ‧ ly /ˈdɑːkli $ ˈdɑːrk-/ BrE AmE adverb
[ Word Family: adjective : ↑ dark , darkened, darkening; noun : ↑ dark , ↑ darkness ; verb : ↑ darken ; adverb : ↑ darkly ]
1 . in a sad, angry, or threatening way:
Fred scowled darkly at her.
2 . having a dark colour:
a darkly handsome man
3 . darkly funny/humorous/comic dealing with something that is bad or upsetting in a funny way:
a darkly comic look at illness