Definition & Synonyms •
Lunacy (n.) A morbid suspension of good sense or judgment, as through fanaticism. (n.) 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.
Synonyms: insaneness Madness,
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