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Lunacy
01
behavior that seems eccentric, irrational, or extremely foolish
Examples
Trying to cross the busy highway on foot was not bravery but lunacy.
Many considered his decision to invest all his savings in a failed company as lunacy.
02
an outdated legal term referring to mental insanity
Examples
The asylum records from the 19th century listed many patients under the broad label of lunacy.
The defense attorney argued his client 's actions were a result of lunacy, hoping to use the old term to their advantage.
Lexical Tree
lunatic
lunacy
lun
