illegalize

tehdä laittomaksi To make illegal; to prohibit by law, to criminalize. (defdate)
2000, Lois Bibbings, Donald Nicolson, Feminist Perspectives on Criminal Law, p. 111:

Only as recently as 1991 was the rape by a husband of his wife illegalised.

A 1908 Act illegalised the teagle, a particularly nasty snare of baited hooks joined by strings which was put out to attract birds during hard weather.

Although slavery had been illegalized by 1870, fundamental prejudice could not be legislated away.