Happy-go-lucky is an adjective that describes someone who is carefree and cheerful in their approach to life. It can also mean someone who takes things lightly and doesn't get bogged down by the stresses of everyday life. Some synonyms for happy-go-lucky include upbeat, buoyant, lighthearted, optimistic, and blithe. Additional synonyms include spontaneous, vivacious, insouciant, and breezy. A happy-go-lucky person is often seen as charming, easy-going, and likable. They tend to bring laughter and joy to those around them, making them great company to be around. Whether you call them sprightly, jaunty, or peppy, there's no denying that happy-go-lucky people make the world a brighter place.