Synonyms for Glad (same or very similar meaning)
WordNet sense 1 (any of numerous plants of the genus Gladiolus native chiefly to tropical and South Africa having sword-shaped leaves and one-sided spikes of brightly colored funnel-shaped flowers; widely cultivated):
gladiola, gladiolus, sword lily
WordNet sense 2 (eagerly disposed to act or to be of service):
happy
WordNet sense 3 (disposed or inclined toward):
willing
WordNet sense 4 (feeling or showing gratitude):
grateful, thankful
WordNet sense 5 (cheerful and bright):
beaming
WordNet sense 6 (being full of or promoting cheer; having or showing good spirits):
cheerful
From the ODE community, based on WordNet
add/edit