空疎 くうそ empty (e.g. argument) #30,030 Meanings na-adjective, noun empty (e.g. argument); insubstantial; hollow; fruitless Its kanji 空 クウ · そら、あ.く、あ.き、あ.ける、から、す.く、す.かす、むな.しい empty, sky, void, vacant, vacuum 疎 ソ、ショ · うと.い、うと.む、まば.ら alienate, rough, neglect, shun, sparse, penetrate