12
clever
10
sane(noun, adjective, reasonable, lamebrain)
7
healthy(adjective, reasonable)
6
normal
4
sensible
2
balanced
2
beautiful
2
clear
2
lucid
2
rational
2
reasonable
0
brainy
0
bright
0
intelligent(adjective, mind, behavior, idiotism)
0
judicious
0
prudent
0
sagacious
0
smart
0
sound
0
valid
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). lunatic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/lunatic/thesaurus/antonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/lunatic/thesaurus/antonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 24 September 2026. <https://smartdefine.org/lunatic/thesaurus/antonyms>