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festive

Examples
In a sentence
Slávnostný večer bol pekný.
The ceremonial evening was nice.
Slávnostný obed pripravili pre hostí z cudziny.
They prepared a festive lunch for guests from abroad.
V slávnostnom oblečení vošli do sály.
They entered the hall in ceremonial attire.
Slávnostný obed sa konal v záhrade.
The festive lunch took place in the garden.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.