'ku' adjective (archaic) sin

noun (common) (futsuumeishi)noun word usually written using kana alone without

noun (common) (futsuumeishi) colloquial word usually written using kana alone unacceptable;not alright;unsatisfactory

'ku' adjective (archaic) archaic nonexistent;not being (there)

expressions (phrasesnoun (common) (futsuumeishi) idiomatic expression jealous complaint;the loud bark of a talentless dog