French word attentat comes from French -at, French attenter ((followed by the preposition à) to assault.)

Detailed word origin of attentat

Dictionary entry	Language	Definition
-at	French (fra)	-at usually denotes an action or a result of an action, like in.
attenter	French (fra)	(followed by the preposition à) to assault.
attentat	French (fra)	Attack, assault (illegal act of violence toward another).

Words with the same origin as attentat