0
grievous
0
gross
0
hard
0
hare-brained
0
harebrained(impulsive, impractical, half-baked, doomed, unplanned)
0
hefty
0
ill-conceived(impulsive, impractical, half-baked, doomed, unplanned)
0
ill-judged(impractical, half-baked, doomed)
0
impracticable(impractical, half-baked, doomed)
0
impractical(impulsive, half-baked, doomed, unplanned, ill-considered)
0
imprudent(impractical, half-baked, doomed)
0
inappropriate(impractical, half-baked, doomed)
0
indiscreet(impulsive, impractical, half-baked, doomed, unplanned)
0
irresponsible(impractical, half-baked, doomed)
0
light-headed
0
loutish
0
ludicrous(silly, impractical, unintelligent, unaware, half-baked)
0
mentally defective
0
muddle-headed
0
not thin(expression, idiom)
11 years ago|6.9k views|share |citing 
APASmart Define. (2015). boneheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/boneheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "boneheaded thesaurus" https://smartdefine.org/boneheaded/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, boneheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/boneheaded/thesaurus/synonyms>.
MLASmart Define. "boneheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/boneheaded/thesaurus/synonyms>