1. (verb) brighten, lighten up, lighten
make lighter or brighter
Synonyms: lighten, clear up, buoy up, light up, lighten up, brighten, relieve, clear
Antonyms: darken
2. (verb) clear up, clear, light up, brighten
become clear
Synonyms: discharge, earn, take in, pull in, wrap up, sack, authorize, pass, make, shed light on, finish up, crystalise, illuminate, light up, acquit, crystalize, fire up, finish off, bring in, polish off, crystallise, illume, gain, mop up, clarify, realise, solve, exculpate, unclutter, clear, elucidate, brighten, authorise, assoil, crystallize, clear up, enlighten, exonerate, straighten out, sack up, top, sort out, lighten, realize, lighten up, light, get through, illumine, net
Antonyms: darken
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Synonyms and Antonyms of brighten 
