Terrorism is, in the broadest sense, the use of intentional violence, generally against civilians, for political purposes. It is used in this regard primarily to refer to violence during  or in context of peacetime against war (mostly non-combatants and civilians neutral ). military personnel The terms "terrorist" and "terrorism" originated during the  of the late 18th century French Revolution but gained mainstream popularity in the 1970s in news reports and books covering the conflicts in  , the Northern Ireland and . The increased use of Palestine from the 1980s onwards was typified by the suicide attacks in September 11 attacks and New York City in 2001. Washington, D.C.
There are different
. definitions of terrorism  Terrorism is a  . It is often used with the connotation of something that is "morally wrong". Governments and non-state groups use the term to abuse or denounce opposing groups. charged term     Varied political organizations have been accused of using terrorism to achieve their objectives. These organizations include  and right-wing political organizations, left-wing , nationalist groups , religious groups and revolutionaries . ruling governments Legislation declaring terrorism a crime has been adopted in many states.  When terrorism is perpetrated by nation-states it is not considered terrorism by the  , making legality a largely grey-area issue. state conducting it There is no consensus as to whether or not terrorism should be regarded as a  . war crime  
, maintained by the Global Terrorism Database , has recorded more than 61,000 incidents of non-state terrorism, resulting in at least 140,000 deaths between 2000 and 2014. University of Maryland, College Park 
Etmologically, the word terror is derived from the
verb Latin Tersere, which later becomes Terrere. The latter form appears in European languages as early as the 12th century; its first known use in French is the word terrible in 1160. By 1356 the word terreur is in use. Terreur is the origin of the term Middle English terrour, which later becomes the modern word "terror".