December 8, 2013 @ 8:01 PM
"Lunatic" is an informal term referring to people who are considered mentally ill, dangerous, foolish or unpredictable; conditions once called lunacy. The term may be considered insulting in serious contexts, though is now more likely to be used in friendly jest. The word derives from lunaticus meaning "of the moon" or "moonstruck". The term was once commonly used in law."
Allen West
