Illegitimate

внебрачный

vnebračnyj

(born to unmarried parents)

незако́нный

nezakónnyj

(against the law)

незаконный

nezakonnyj

(born to unmarried parents)

нелега́льный

nelegálʹnyj

(against the law)

нелегити́мный

nelegitímnyj

(against the law)

нелигитимный

neligitimnyj

(not conforming to known principles, or established or accepted rules or standards)

противозако́нный

protivozakónnyj

(against the law)