From Longman Dictionary of Contemporary Englishchipperchip‧per /ˈtʃɪpə $ -ər/ adjective old-fashioned informal HAPPYhappy and active You’re looking very chipper this morning.
Examples from the Corpus
chipper• She, Rosie, was game for anything, but poor Carlo hadn't been feeling exactly chipper.• Felt pretty chipper, as we scraped together enough coins to buy a shared polystyrene cup of milky tea.• What a chipper mood they were always in!• You're looking very chipper this morning, Deborah.• He spoke in a chipper tone, trying to let the children know he was talking to them.Origin chipper (1800-1900) Probably from English dialect kipper “cheerful and active” 