definition of a terrorist
Full Definition of TERRORISM. : the systematic use of terror especially as a means of coercion. â terÂ·rorÂ·ist \-Ér-ist\ adjective or noun. â terÂ·rorÂ·isÂ·tic \Ëter-Ér-Ëis-tik\ adjective. See terrorism defined for English-language learners.See terrorism defined for kids.errorism. noun terÂ·rorÂ·ism \Ëter-Ér-Ëi-zÉm\. Tweet. : the use of violent acts to frighten the people in an area as a way of trying to achieve a political goal.