text: what is the origin of the word,"assasin"? i think it may have started with arabic, and the word hashish. very good ....here is what i found   meanwhile, back at your first question, the first "assassins" were muslim fanatics who, at the time of the crusades, pledged themselves to ridding their lands of christian infidels and other enemies. in preparation for their murderous forays, they would fortify themselves by consuming large quantities of hashish, and thus became known as "hashashin," or "hashish eaters." when the word was imported into english in the 17th century, it was spelled more phonetically, and "assassin" eventually came to mean anyone who commits murder, usually of a public figure, for political, psychological, monetary or religious reasons.