てんじょうし 天井知らず LinksSentence search for 天井知らずSentence search for てんじょうしらずKanji details for 天, 井 and 知Edit in JMdict Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Noun1. skyrocketing (prices) Discussions Log in to talk about this word.