Following are all the brightening like words, in the list below.
LIGHTEN
100% like brightening
LIGHT UP
99.99% like brightening
CLEAR
99.99% like brightening
CLEAR UP
99.9% like brightening
LIGHTEN UP
99.89% like brightening
DARKENING
49.97% like brightening
ENHANCING
49.97% like brightening
SOFTENING
49.97% like brightening
DIMMING
49.97% like brightening
LIGHTENING
49.97% like brightening
IMPROVING
49.97% like brightening
REJUVENATING
49.97% like brightening
BOOSTING
49.97% like brightening
BEAUTIFYING
49.97% like brightening
SHINING
49.97% like brightening
UPLIFTING
49.97% like brightening
ILLUMINING
49.97% like brightening
ENLIVENING
49.97% like brightening
ILLUMINATING
49.97% like brightening
BROADENING
49.97% like brightening
WHITENING
49.97% like brightening
REINVIGORATING
49.97% like brightening
REVITALIZING
49.97% like brightening
GLOW
49.97% like brightening
STRENGTHENING
49.97% like brightening
BRIGHTER
49.97% like brightening
FADING
49.97% like brightening
CALMING
49.97% like brightening
FRESHENING
49.97% like brightening
LIGHTENED
49.97% like brightening
ENRICHING
49.97% like brightening
REVITALISING
49.97% like brightening
BRIGHT
49.97% like brightening
ENERGIZING
49.97% like brightening
BUOYING
49.97% like brightening
LENGTHENING
49.97% like brightening
BRIGHTENINGS
49.97% like brightening
DARKENED
49.97% like brightening
AUGMENTING
49.97% like brightening
BRIGHTENERS
49.97% like brightening
RADIANCE
49.97% like brightening
VITALIZING
49.97% like brightening
SHINE
49.97% like brightening
DIMINISHING
49.97% like brightening
SUFFUSING
49.97% like brightening
TRANSFIGURING
49.97% like brightening
SHINNING
49.97% like brightening
LIGHT
49.97% like brightening
STRAIGHTENING
49.97% like brightening
BRIGHTNESS
49.97% like brightening
LUMINOUS
49.97% like brightening
AMPLIFYING
49.97% like brightening
BLEACHING
49.97% like brightening
CLEANSING
49.97% like brightening
LIGHTENS
49.97% like brightening
INTENSIFYING
49.97% like brightening
DAZZLING
49.97% like brightening
BLOOMING
49.97% like brightening
SOOTHING
49.97% like brightening
NOURISHING
49.97% like brightening
AMELIORATING
49.97% like brightening
STABILIZING
49.97% like brightening
SMOOTHING
49.97% like brightening
UPLIFT
49.97% like brightening
ENLARGING
49.97% like brightening
BOLSTERING
49.97% like brightening
COMPLEMENTING
49.97% like brightening
CHANGING
49.97% like brightening
GREENING
49.97% like brightening
DAPPLING
49.97% like brightening
DULLING
49.97% like brightening
SPARKLE
49.97% like brightening
TIGHTENING
49.97% like brightening
SIMPLIFYING
49.97% like brightening
CORRECTING
49.97% like brightening
SAVING
49.97% like brightening
EXPANDING
49.97% like brightening
WARMING
49.97% like brightening
TRANSFORMING
49.97% like brightening
REFLECTING
49.97% like brightening
DRYING
49.97% like brightening
REPLENISHING
49.97% like brightening
CHEERY
49.97% like brightening
PERKING
49.97% like brightening
DECONGESTING
49.97% like brightening
REVIVIFYING
49.97% like brightening
REDUCING
49.97% like brightening
ENHANCED
49.97% like brightening
DUSTING
49.97% like brightening
CLARIFYING
49.97% like brightening
EFFECT
49.97% like brightening
DIFFUSING
49.97% like brightening
INVIGORATING
49.97% like brightening
BOOST
49.97% like brightening
ENHANCEMENT
49.97% like brightening
RESHAPING
49.97% like brightening
STIMULATING
49.97% like brightening
PURIFYING
49.97% like brightening
REVIVING
49.97% like brightening
ALLEVIATING
49.97% like brightening