6
improve(verb, encourage, raise, development, stimulate)
6
enlighten
6
intensify(verb, increase, severe, strengthen, shine)
6
invigorate(verb, raise, stimulate, cheer, restore)
6
kindle(verb, light, flash, color, burn)
6
lighten up(verb, expression, phrasal verb, improve, refresh)
5
ameliorate(verb, development, growth, self-improvement)
5
buoy up(verb, expression, phrasal verb, excite, happy)
5
elevate(verb, encourage, raise, development, excite)
5
exhilarate(verb, encourage, raise, stimulate, excite)
5
gleam(noun, verb, light, color, burn)
5
inspire(verb, encourage, raise, stimulate, excite)
5
inspirit(verb, encourage, raise, stimulate, excite)
5
irradiate(verb, light, flash, shine, kindle)
5
uplift(verb, encourage, raise, excite, boost)
4
buoy(verb, encourage, stimulate, excite, prepare)
4
clean(verb, clear, open, release, free)
4
console(verb, reduce, release, free, encourage)
4
furbish(verb, clean, restore, shine, trim)
4
gain(verb, development, growth, self-improvement)
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>