4
brainlessness(noun, apathy, nonsense, absurdity, stupidity)
4
fatuousness(noun, apathy, nonsense, absurdity, ignorance)
4
foolhardiness(noun, stupidity, foolishness, madness, irrationality)
4
hysteria(noun, love, passion, desire, excitement)
4
illogic
4
ridiculousness(fun, absurdity, mischief, silliness, horseplay)
4
wackiness(stupidity, foolishness)
3
brainsickness(noun, sane)
3
daftness(noun, nonsense, absurdity, stupidity, foolishness)
3
delusion(stupidity, foolishness, insanity, irrationality, folly)
3
illogicality
3
ineptitude(noun, apathy, nonsense, absurdity, ignorance)
3
mental derangement(expression, idiom)
3
neurosis(noun, depression, stupidity, foolishness, insanity)
3
rage(noun, love, passion, desire, excitement)
3
unwiseness(nonsense, absurdity, stupidity, silliness, irrationality)
2
buffoonery(absurdity, stupidity, foolishness, shenanigans)
2
craze(noun, love, passion, desire, excitement)
2
disorientation(restlessness, hallucination, fever)
2
disturbance(noun, confusion, rage, protest, commotion)
11 years ago|6.9k views|share |citing 
APASmart Define. (2015). lunacy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/lunacy/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunacy thesaurus" https://smartdefine.org/lunacy/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, lunacy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/lunacy/thesaurus/synonyms>.
MLASmart Define. "lunacy thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/lunacy/thesaurus/synonyms>