My thanks to ஊர்மிளா தேவநாதன் who has appreciated clue for ஒளியாது. I take inspiration from Vanchi's clues and generally my clues are easier to solve than Vanchi's. But today's clue for ஒளியாது which has stumped many is an exception. Vanchi's clue was இருளை நீக்குவதும் மறையும் (4)=ஒளியும்.