Illegitimate
Part of speech: adjective
Definition: Illegal; against the law. Born to unmarried parents. Illogical; incorrectly deduced.
Example sentence: Inequality of any kind, once considered a normal, natural part of human existence, came to be seen in the course of the twentieth century as increasingly illegitimate.
Unlawful
Part of speech: adjective
Definition: Prohibited. Not permitted by law, may refer to civil or criminal law (see illegal).
Example sentence: China's Nine-Dashed Line was deemed an unlawful maritime claim by an arbitral tribunal convened under the 1982 Law of the Sea Convention in July 2016, a position shared by the U.S. government.