Synset
become dark or darker
<verb.change>
freq. cnt.: 4
freq. cnt.: 4
darken
sample sentences
"The sky darkened"
verb frames
Something ----s
lexical pointers
derivationally related form
darkening
antonym
lighten
semantic pointers
hypernym
change
hyponym
dusk
black out, blacken out
cloud over, overcloud, cloud up