I could plainly diſcover from whence one Family derives a long Chin; why a ſecond hath abounded with Knaves for two Generations, and Fools for two more; why a third happened to be crack-brained, and a fourth to be Sharpers.
Source: wiktionary
Crack-brained
Synonyms for "crack-brained" (183 found)
Ranked by relevance and common usage.
Closest matches (37)
Strong matches (55)
Adjective(45 words)
datelessdensedenteddimdim-bulbdim-headeddim-witteddoltishdopeydozydrowsydulldull-headeddull-mindeddull-witteddumbdumb as a bag of hammersdumb as a box of rocksdumb as a doorknobdumb as a post
Show 25 more words
dumb as a sack of hammersdumb as an oxdumb as dirtdumber than a box of rocksdumber than a rockdunderheadedempty-headedfatheadedfatuousfeeble-mindedflea-brainedfoolishfuckwittedfuzzy-headedfuzzy-mindedhalf-brainedhalf-wittedhammer-headedheadassidioticimbecilicinaneinsipidintellectually challengedjolterheaded
Adjective(1 words)
Related words (91)
Adjective(64 words)
knuckleheadedlacklusterlamebrainedlowbrowlumpishlunkheadedmeatheadedmentally challengedmentally retardedmindlessmonosynapticmoronicmuttonheadednittynitwittednot the sharpest crayon in the boxnot the sharpest knife in the drawernot the sharpest tool in the shednumbskulledoafish
Show 44 more words
obtusepeabrainedprattypudding-headedpuerilepurblindquarter-wittedretardedrockheadedsharp as a bowling ballsheep-headedshit-for-brainssimpleslowslow on the uptakeslow-wittedsluggishsmooth-brainedstolidstupidthickthick as a brickthick as a plankthick as a whale omelettethick as champthick as mincethick as pig shitthick as two short planksthick-skulledthickheadedthickwittedunapprehensiveuncleverunderbrainedunintelligentunsmartvacantvacuouswitlesswooden-headedwoodenheadedwool-headedwoolly-headedwoolly-minded
Sample sentences
1 total sentences available.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.