M0327000 (mûrth′fəl)adj.1. Full of gladness and merriment.2. Characterized by or expressing gladness and merriment: a warm, tender, and mirthful movie.mirth′ful·ly adv.mirth′ful·ness n.Thesaurus
Adv.
1.
mirthfully - in a joyous manner; "they shouted happily"blithely, gayly, happily, jubilantly, merrily