| No. | Item | Definition |
|---|---|---|
| 1. | aberration | a departure from what is normal |
| 2. | absurdity | something wildly unreasonable or contradictory |
| 3. | ambiguity | quality of having multiple meanings |
| 4. | ambivalence | mixed contradictory feelings or ideas |
| 5. | anomaly | something that defies expectation |
| 6. | antinomy | a contradiction between principles |
| 7. | aporia | an irresolvable internal contradiction |
| 8. | bafflement | state of being baffled |
| 9. | bewilderment | state of puzzlement or confusion |
| 10. | bizarreness | quality of being strangely contradictory |
| 11. | brain teaser | a puzzling mental problem |
| 12. | brain-twister | a deeply puzzling problem |
| 13. | breach | a break in consistency |
| 14. | catch-22 | a self-defeating contradictory situation |
| 15. | conflict | a clash between opposing ideas |
| 16. | contradiction | a statement that conflicts with itself |
| 17. | contrariety | opposition between ideas or facts |
| 18. | contrary | something opposite to expectation |
| 19. | conundrum | a confusing and difficult problem |
| 20. | cosmic irony | fate’s cruel contradiction |
| 21. | countertruth | a truth that seems contradictory |
| 22. | curiosity | an unusual or puzzling thing |
| 23. | dark irony | grim contradiction in events |
| 24. | disconnect | a lack of logical connection |
| 25. | discord | disagreement or lack of harmony |
| 26. | discordance | lack of agreement or harmony |
| 27. | discrepancy | a lack of consistency |
| 28. | dissonance | a clash of elements or ideas |
| 29. | double bind | a no-win contradictory situation |
| 30. | duality | state of having two sides |
| 31. | enigma | something puzzling and hard to interpret |
| 32. | equivocation | use of contradictory ambiguity |
| 33. | exception | something that does not follow rules |
| 34. | fallacy | a mistaken or unsound idea |
| 35. | farce | an absurdly contradictory situation |
| 36. | friction | conflict from opposing elements |
| 37. | gap | a missing logical connection |
| 38. | head-scratcher | something baffling or puzzling |
| 39. | illogic | faulty or contradictory reasoning |
| 40. | implausibility | quality of seeming unlikely or illogical |
| 41. | impossible truth | a true seeming contradiction |
| 42. | incoherence | lack of logical connection |
| 43. | incompatibility | state of being unable to coexist |
| 44. | incongruity | a mismatch of elements or ideas |
| 45. | inconsistency | lack of logical agreement |
| 46. | indeterminacy | state of being not clearly settled |
| 47. | insolubility | quality of being unsolvable |
| 48. | inversion | reversal of expected order |
| 49. | irony | a contradiction between appearance and reality |
| 50. | irregularity | something not following usual pattern |
| 51. | joker | an unexpected complicating factor |
| 52. | knot | a difficult tangled problem |
| 53. | labyrinth | a confusing and intricate situation |
| 54. | logical impasse | a dead end in reasoning |
| 55. | logical puzzle | a problem of conflicting logic |
| 56. | maze | a confusing complex situation |
| 57. | mental knot | a difficult tangle of thought |
| 58. | mind-bender | something that twists logic |
| 59. | mismatch | a poor or contradictory fit |
| 60. | mixed signal | a contradictory message |
| 61. | muddle | a confused or disordered state |
| 62. | mystery | something difficult to explain |
| 63. | nonsense | something absurd or illogical |
| 64. | oddity | something strange or unexpected |
| 65. | oddness | quality of being strange |
| 66. | oppositeness | quality of being opposed |
| 67. | opposition | direct contrast or conflict |
| 68. | oxymoron | a self-contradictory expression |
| 69. | peculiarity | a strange or unusual feature |
| 70. | perplexity | state of being puzzled |
| 71. | phenomenon | an observable puzzling fact |
| 72. | poser | a puzzling question or problem |
| 73. | preposterousness | extreme absurdity or illogic |
| 74. | problem | a difficult or puzzling matter |
| 75. | puzzle | something hard to understand logically |
| 76. | reasoning snag | a problem in logic |
| 77. | reversal | a turn to the opposite |
| 78. | riddle | a puzzling or baffling problem |
| 79. | rub | the troublesome contradictory point |
| 80. | self-contradiction | a contradiction within itself |
| 81. | semantic knot | a tangle of meaning |
| 82. | special case | an exceptional puzzling instance |
| 83. | sticking point | the difficult contradictory part |
| 84. | strange contradiction | an unusual contradiction |
| 85. | strange truth | a truth that seems odd |
| 86. | stumbling block | something hard to reconcile logically |
| 87. | stumper | a problem that defeats understanding |
| 88. | tangle | a confused or tangled situation |
| 89. | teaser | a problem that puzzles |
| 90. | tension | strain between opposing forces |
| 91. | thought knot | a tangle in reasoning |
| 92. | truth clash | a conflict between truths |
| 93. | truth puzzle | a puzzling truth claim |
| 94. | twist | an unexpected contradictory turn |
| 95. | uncertainty | lack of clear conclusion |
| 96. | unlikelihood | quality of seeming improbable |
| 97. | unreason | lack of logic or sense |
| 98. | unsoundness | lack of logical validity |
| 99. | variance | difference from what is expected |
| 100. | weirdness | quality of being oddly puzzling |
