The definition of gruesome is something unpleasant or causing
horror.(adjective) An example of something that would be
described as gruesome is a violent murder scene. See gruesome in
Webster's New World College Dictionary Origin: < dial. grue, to
shudder (< ME gruwen, akin to MHG < IE base *ĝhreu-, to grind
down > grit) + -some See gruesome in American Heritage
Dictionary 4 Origin: Obsolete grue, to shudder (from Middle
English gruen, from Middle Dutch grūwen or Middle Low German
gruwen) Origin: + -some1. Learn more about gruesome