2
scatterbrained(extraordinary, amazing, dubious, astonishing, incredible)
2
senseless(weak, simple, foolish, unreasonable, illogical)
2
unbelievable(adjective, extraordinary, amazing, incredible)
2
unreasonable(adjective, weak, simple, foolish, illogical)
2
unwise(adjective, weak, simple, foolish, unreasonable)
1
airheaded
1
anserine
1
astonishing(extraordinary, amazing, dubious, incredible)
1
balmy
1
bananas(adjective, slang, crazy, mad)
1
bizarre
1
brainless(weak, simple, foolish, unreasonable, illogical)
1
crackers
1
demented(adjective, wrong, silly, foolish, stupid)
1
dippy(adjective, slang, crazy, mad)
1
dizzy
1
doolally(adjective, slang, crazy, mad)
1
dopey
1
dopy
1
dotty
11 years ago|3.7k views|share |citing 
APASmart Define. (2015). cockamamie thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/cockamamie/thesaurus/synonyms
ChicagoSmart Define. 2015. "cockamamie thesaurus" https://smartdefine.org/cockamamie/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, cockamamie thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/cockamamie/thesaurus/synonyms>.
MLASmart Define. "cockamamie thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/cockamamie/thesaurus/synonyms>