3
rub(verb, clean, improve, restore, shine)
3
smile
3
vitalize
2
alight
2
boost(verb, increase, encourage, raise, severe)
2
bright
2
buff(verb, clean, improve, restore, shine)
2
cleanse(clear, open, release, free, clean)
2
delight(verb, animate, revitalize, lighten, revitalise)
2
excite(verb, encourage, raise, stimulate, prepare)
2
floodlight(verb, light, flash, shine, kindle)
2
galvanize(verb, encourage, raise, stimulate, excite)
2
give a lift(verb, expression, idiom, encourage, stimulate)
2
highlight(verb, light, flash, shine, kindle)
2
jazz up(verb, expression, phrasal verb, stimulate, cheer)
2
lift(verb, encourage, raise, stimulate, improve)
2
mend(verb, raise, development, stimulate, cheer)
2
ornament(verb, trim, embellish, decorate, adorn)
2
quicken(verb, increase, encourage, raise, severe)
2
raise(verb, increase, severe, stimulate, boost)
11 years ago|9.6k views|share |citing 
APASmart Define. (2015). brighten thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/brighten/thesaurus/synonyms
ChicagoSmart Define. 2015. "brighten thesaurus" https://smartdefine.org/brighten/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, brighten thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/brighten/thesaurus/synonyms>.
MLASmart Define. "brighten thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/brighten/thesaurus/synonyms>