非合法
Common
I-adj
Noun
Noun
1
adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi)
illegal;unlawful
奴隷制度が非合法となってから１世紀以上になる。
It is over a century since slavery was made illegal.