English → French
darken /BrE ˈdɑːk(ə)n 
, AmE ˈdɑrkən /
A
transitive verb
1 (reduce light in) obscurcir [sky, landscape]; assombrir [house, room]
2 (in colour) foncer [liquid, colour]; brunir [skin, complexion]
3 (cloud) assombrir [atmosphere, future]
B
intransitive verb
1 (lose light) [sky, room] s'obscurcir
2 (in colour) [liquid] foncer; [skin, hair] brunir
3 (show anger) [eyes, face] se rembrunir
4 (become gloomy) [atmosphere, mood, outlook] s'assombrir
C darkened
adjective
[room, house] obscur, sombre
D darkening
adjective
[sky, wood] gagné par l'obscurité
the darkening evenings les soirées où la nuit tombe vite
Idiom
don't ever darken my door again!
ne remettez plus les pieds ici!