空理空論 くうりくうろん Meanings Noun impractical theory; academic discussion; doctrinairism Kanji 空 sky. Read as クウ. 理 reason 論 argument. Read as ロン. Example sentences 皆、空理空論ばかり言って、時間の無駄だよ、この会議は。This meeting is a waste of time. Everybody is just talking in vague theoretical terms. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists