. "\"Any process that stops, prevents or reduces the frequency, rate or extent of glycogen (starch) synthase activity.\" [GOC:obol]" . . "negative regulation of glycogen (starch) synthase activity" . "negative regulation of glycogen (starch) synthetase activity" . "negative regulation of UDP-glucose-glycogen glucosyltransferase activity" . "negative regulation of UDP-glucose:glycogen 4-alpha-D-glucosyltransferase activity" . "negative regulation of UDP-glycogen synthase activity" . "negative regulation of UDPG-glycogen synthetase activity" . "negative regulation of UDPG-glycogen transglucosylase activity" . "negative regulation of UDPglucose:glycogen 4-alpha-D-glucosyltransferase activity" . "negative regulation of uridine diphosphoglucose-glycogen glucosyltransferase activity" . . .