adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
1.impossible; incapable (of doing); unable (to do)
noun (common) (futsuumeishi)
2.incompetence; inability
noun (common) (futsuumeishi)
3.impotence noun (common) (futsuumeishi)
4.having no solution (of an equation)