きじょうくうろん 机上の空論 LinksSentence search for 机上の空論Sentence search for きじょうのくうろんKanji details for 机, 上, 空 and 論Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. armchair theory; impracticable plan; unworkable idea Discussions Log in to talk about this word.