luminous

adj.

[1]	shiny , aglow , lambent , shining , bright , lucent , brilliant , lighted (up) , lit (up) , illuminated , radiant , alight , resplendent , lustrous , gleaming , shimmering , glistening , sparkling , dazzling , refulgent , effulgent
[2]	glowing , aglow , luminescent , incandescent , phosphorescent , fluorescent
[3]	clear , lucid , perspicuous , percipient , perspicacious , penetrating , discerning , perceptive , clear-eyed , clear-headed , keen , acute , sharp , explicit , incisive , specific , express , understandable , intelligible