げいき にわか景気 LinksSentence search for にわか景気Sentence search for にわかげいきSentence search for 俄か景気Sentence search for 俄景気Kanji details for 景 and 気Edit in JMdict Noun1. temporary boomOther forms俄か景気 【にわかげいき】、俄景気 【にわかげいき】 Discussions Log in to talk about this word.