Antonyms of verb darken

2 of 3 senses of darken

Sense 1
darken -- (become dark or darker; "The sky darkened")
       Antonym of lighten (Sense 5)
      => lighten, lighten up -- (become lighter; "The room lightened up")

Sense 3
darken -- (make dark or darker; "darken a room")
       Antonym of brighten (Sense 1)
      => brighten, lighten up, lighten -- (make lighter or brighter; "The paint will brighten the room")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb darken

3 senses of darken

Sense 1
darken -- (become dark or darker; "The sky darkened")
       => change -- (undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night")

Sense 2
darken -- (tarnish or stain; "a scandal that darkened the family's good name")
       => tarnish, stain, maculate, sully, defile -- (make dirty or spotty, as by exposure to air; also used metaphorically; "The silver was tarnished by the long exposure to the air"; "Her reputation was sullied after the affair with a married man")

Sense 3
darken -- (make dark or darker; "darken a room")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")