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grand; magnificent; lavish; large scale; prosperous; thriving; lively
forceful; powerful; vigorous
彼女の還暦祝いは盛大な祝賀会となった。
Her 60th birthday celebration became a grand party.
盛大な花火大会に数万人の観客が集まった。
Tens of thousands of spectators gathered for the grand fireworks festival.
開通記念式典は盛大に執り行われた。
The opening ceremony was held in grand fashion.