| No. | Item | Definition |
|---|---|---|
| 1. | absurd | wildly unreasonable or foolish |
| 2. | addlebrained | confused and foolish |
| 3. | addlepated | confused and silly |
| 4. | airheaded | silly and not thoughtful |
| 5. | asinine | extremely foolish |
| 6. | backward | slow to learn |
| 7. | balmy | foolish or eccentric |
| 8. | barmy | foolish or crazy |
| 9. | birdbrained | foolishly unintelligent |
| 10. | blockheaded | very dull or stupid |
| 11. | boneheaded | stupid in a stubborn way |
| 12. | bonkers | foolish or crazy |
| 13. | brainless | lacking intelligence or thought |
| 14. | cloddish | stupid and awkward |
| 15. | clueless | completely lacking understanding |
| 16. | crackbrained | crazy or foolish |
| 17. | crazy | foolish or irrational |
| 18. | cretinic | stupid in an offensive way |
| 19. | cretinous | extremely stupid or foolish |
| 20. | daft | silly or foolish |
| 21. | dense | slow to understand |
| 22. | dim | not mentally sharp |
| 23. | dippy | silly or foolish |
| 24. | ditzy | scatterbrained and silly |
| 25. | doltish | like a stupid person |
| 26. | dopey | silly or slow-thinking |
| 27. | dumb | lacking intelligence or sense |
| 28. | empty-headed | lacking intelligence or judgment |
| 29. | fatuous | silly and pointless |
| 30. | feeble-minded | mentally weak or foolish |
| 31. | fool-headed | rashly foolish |
| 32. | foolhardy | recklessly foolish |
| 33. | foolish | showing poor judgment |
| 34. | goofy | silly in a foolish way |
| 35. | gormless | stupid and lacking initiative |
| 36. | green | naively inexperienced |
| 37. | gross | obviously foolish or crude |
| 38. | half-witted | foolishly lacking intelligence |
| 39. | ham-fisted | clumsy and foolish |
| 40. | hammy | overdone and foolish |
| 41. | harebrained | recklessly foolish |
| 42. | heedless | carelessly thoughtless |
| 43. | hopeless | completely incompetent or foolish |
| 44. | idiotic | extremely foolish or senseless |
| 45. | idiotical | extremely foolish |
| 46. | imbecilic | very stupid |
| 47. | inane | lacking sense or meaning |
| 48. | infantile | immature and foolish |
| 49. | insensate | lacking sense or understanding |
| 50. | jejune | naively simplistic |
| 51. | loopy | foolish or crazy |
| 52. | loutish | clumsy and stupid |
| 53. | lumpish | dull and clumsy |
| 54. | mad | foolish or irrational |
| 55. | madcap | wildly foolish |
| 56. | mindless | showing little thought |
| 57. | moronic | very foolish or unintelligent |
| 58. | mud-brained | stupid and confused |
| 59. | muddle-headed | confused and foolish |
| 60. | muttonheaded | stupid and dull |
| 61. | naive | showing lack of judgment |
| 62. | nonsensical | making no sense |
| 63. | nutty | foolish or crazy |
| 64. | oafish | stupid and awkward |
| 65. | obtuse | slow to understand |
| 66. | overwrought | excessively dramatic and foolish |
| 67. | pathetic | pitifully foolish |
| 68. | pea-brained | very stupid |
| 69. | pigheaded | stupidly stubborn |
| 70. | pitiful | deserving pity for foolishness |
| 71. | preposterous | completely unreasonable or foolish |
| 72. | rash | acting without thought |
| 73. | reckless | carelessly foolish |
| 74. | ridiculous | deserving mockery for foolishness |
| 75. | sappy | foolishly sentimental |
| 76. | screwball | foolish or odd |
| 77. | senseless | lacking reason or sense |
| 78. | silly | showing poor sense |
| 79. | simple-minded | naively unintelligent |
| 80. | slow-witted | not quick to understand |
| 81. | sorry | pathetically poor or foolish |
| 82. | thick | slow to understand things |
| 83. | thickheaded | stubbornly slow to understand |
| 84. | thoughtless | showing little consideration |
| 85. | uncomprehending | unable to understand |
| 86. | unintelligent | not intelligent |
| 87. | unperceptive | not quick to notice |
| 88. | unreasoning | not guided by reason |
| 89. | unsmart | not smart |
| 90. | unthinking | not using thought |
| 91. | vacuous | showing no intelligence |
| 92. | vain | foolishly pointless |
| 93. | vapid | dull and empty-minded |
| 94. | village idiot | very foolish person |
| 95. | wacky | foolish or odd |
| 96. | witless | without good sense |
| 97. | wooden-headed | dull and stupid |
| 98. | woolly-minded | unclear and foolish |
| 99. | wrongheaded | stubbornly foolish |
| 100. | zany | comically foolish |