Jubilantly

adv. [f. prec. + -LY².] In a jubilant manner, with demonstrations of joy, exultantly, gladly.

1842.  Mary Howitt, trans. F. Bremer’s Diary, 14. A lark soared jubilantly over the river up into the high blue air.

1868.  ‘Holme Lee,’ B. Godfrey, III. xlix. 4. She was welcomed … by the children jubilantly.

1884.  Harper’s Mag., Aug., 472/1. The shout is jubilantly renewed and prolonged.