せいだい 盛大 Common word JLPT N1 Show 1 collocation 盛大に趣く - to grow in prosperity LinksSentence search for 盛大Sentence search for せいだいKanji details for 盛 and 大Edit in JMdict Na-adjective (keiyodoshi), Noun1. grand; magnificent; lavish; large scale; prosperous; thriving; livelyNa-adjective (keiyodoshi), Noun2. forceful; powerful; vigorous Discussions Log in to talk about this word.