1. impossible, incapable (of doing), unable (to do)

noun (common) (futsuumeishi) adjectival nouns or quasi-adjectives (keiyodoshi)

2. incompetence, inability

noun (common) (futsuumeishi)

3. impotence

noun (common) (futsuumeishi)

4. having no solution (of an equation)

noun (common) (futsuumeishi) mathematics