S1U1N1N1Y4
8 points
SUNNY is validvalid
filled with sunlight [adj SUNNIER, SUNNIEST] : SUNNILY [adv], SUNNINESS [n]
full of sun [adj SUNNIER, SUNNIEST, SUNNILY]
filled with sunlight [adj SUNNIER, SUNNIEST] : SUNNILY [adv], SUNNINESS [n]
full of sun [adj SUNNIER, SUNNIEST, SUNNILY]