slavnostní angolul

festive▼(having the atmosphere, decoration, or attitude of a festival, holiday, or celebration)
adjective
[UK: ˈfe.stɪv] [US: ˈfe.stɪv]

gala▼(festive)
adjective
[UK: ˈɡɑː.lə] [US: ˈɡæ.lə]