extreme foolishness or an extremely irrational idea; historically, a mental illness believed to be caused by the moon.
From Latin 'luna' (moon). Medieval doctors believed the moon's phases caused mental illness—'lunatics' were people supposedly affected by lunar cycles. Modern psychology abandoned this theory, but the word persists.
The 'lunar influence' on human behavior is a stubborn myth—despite studies showing no connection between moon phases and hospital admissions, emergency room visits, or crime rates, people still believe it affects sleep and behavior.
Lunacy historically pathologized women disproportionately; medical institutions committed women at higher rates for behaviors considered normal in men, using mental illness to control female autonomy.
Use mental illness, psychological distress, or specify condition. Avoid lunacy/insanity—archaic terms that stigmatize and lack clinical meaning.
["mental illness","psychological distress","severe anxiety","delirium"]
Women fought for medical autonomy and diagnostic respect; current language should reflect psychiatric precision, not gendered prejudgment.
Complete word intelligence in one call. Free tier — 50 lookups/day.