gleefulEnglishOxford English Thesaurusgleeful adjective a gleeful chuckle: delighted, pleased, joyful, happy, glad, amused, mirthful, cheerful, overjoyed, elated, euphoric, exhilarated; merry, gay, high-spirited, in high spirits, jolly, jovial, exuberant; cock-a-hoop, jubilant; informal over the moon; literary joyous. ▷antonyms gloomy.gleeful Oxford Dictionary of English