Definify.com
Webster 1913 Edition
Lunacy
1.
Insanity or madness; properly, the kind of insanity which is broken by intervals of reason, – formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation.
Brande.
Burrill.
Your kindred shuns your house
As beaten hence by your strange
As beaten hence by your strange
lunacy
. Shakespeare
Syn. – Derangement; craziness; mania. See
Insanity
. Webster 1828 Edition
Lunacy
LU'NACY
,Noun.
1.
A species of insanity of madness, supposed to be influenced by the moon, or periodical in the month.2.
Madness in general.