i Register
In some senses, brightness is marked as figuratively, idiomatic. Watch for register when choosing this word.
ADJ.
absolute, all, apparent, dazzling, increasing, light, lowest
VERB + BRIGHTNESS
adjust, blushing, carried, dampening, end, produce, rings, screen
BRIGHTNESS + NOUN
countenance, day, distance, magnitude, sky, star's, summer, sunlight
PREP.
down, in, in, into, on, with
ADV.
vividly