Lu″na‐cy (?), n.; pl.Lunacies (#). [See Lunatic.] 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 lunacy. Shak.
2. A morbid suspension of good sense or judgment, as through fanaticism. Dr. H. More.
Syn. — Derangement; craziness; mania. See Insanity.