3
witless(adjective, foolish, crazy, mad, odd)
2
bughouse
2
certifiable
2
chapped
2
cockamamie
2
cockamamy(adjective, foolish)
2
curved
2
deranged
2
eccentric
2
fantastic(adjective, foolish)
2
irrational(adjective, foolish)
2
ludicrous(adjective, foolish)
2
maniacal
2
mental
2
non compos mentis
2
of unsound mind
2
psychotic
2
stupid(adjective, informal, foolish)
2
unbalanced
2
unhinged
11 years ago|7.7k views|share |citing 
APASmart Define. (2015). loopy thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/loopy/thesaurus/synonyms
ChicagoSmart Define. 2015. "loopy thesaurus" https://smartdefine.org/loopy/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, loopy thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/loopy/thesaurus/synonyms>.
MLASmart Define. "loopy thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/loopy/thesaurus/synonyms>