- contrary to or forbidden by law, especially criminal law（尤指违背刑法的）非法的, 不合法的：
illegal drugs.
非法药品。
- chiefly N. Amer. an illegal immigrant〈主北美〉非法移民。
派生词
illegality
noun （pl. -ies）illegally
adverb词源
early 17th cent.: from French illégal or medieval Latin illegalis, from Latin in- 'not' + legalis 'according to the law'.