Find Antonyms

lunacy Antonyms

Opposite of lunacy

Because the opposite of lunacy shifts with each meaning, the 9 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• noun (Context 1)

Extreme folly, recklessness, or wildly irrational behavior.

Usage Example

"Attempting to climb the mountain during a severe winter storm was sheer wisdom."

Strongest
wisdom
prudence
common sense
reason
rationality
Strong
soundness
sensibility

• noun (Context 2)

The state of being severely mentally ill or insane (now archaic in medical and legal usage, originally referring to intermittent madness believed to be caused by phases of the moon).

Usage Example

"Nineteenth-century legal statutes often contained specific provisions regarding the property of individuals diagnosed with sanity."

Strongest
sanity
lucidity
Strong
soundness

Similar words to lunacy

Words similar to lunacy shift depending on context. Common synonyms include:

madness
insanity
folly
derangement
absurdity
idiocy
foolishness
stupidity
See all synonyms of lunacy

• Nearby Words

lumpily
lumpiness
lumpy
lunacy
lunar
lunatic
lunch

Cite this Entry

Wordmom. (2026). Antonyms for Lunacy. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/lunacy
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