| No. | Item | Definition |
|---|---|---|
| 1. | accidentally done | done unintentionally |
| 2. | accidentally so | in an accidental way |
| 3. | all by accident | entirely accidental |
| 4. | as a slip-up | as a minor mistake |
| 5. | as an accident | as something unintended |
| 6. | at the wrong time | at an unintended time |
| 7. | by a fluke | by unlikely chance |
| 8. | by a lapse in judgment | because of poor judgment |
| 9. | by a slip-up | because of a slip-up |
| 10. | by accident | happening unintentionally |
| 11. | by blundering | because of blundering |
| 12. | by botching it | because it was botched |
| 13. | by bungling it | because it was bungled |
| 14. | by chance | not planned or intended |
| 15. | by coincidence | as a chance occurrence |
| 16. | by error | because of an error |
| 17. | by fluke | by unlikely chance |
| 18. | by fumbling it | because it was fumbled |
| 19. | by getting it wrong | because it was wrong |
| 20. | by goofing up | because of a mistake |
| 21. | by happenstance | by chance, not intention |
| 22. | by messing up | because of a mistake |
| 23. | by misadventure | through an accident |
| 24. | by miscalculating | because of miscalculation |
| 25. | by mischance | by bad luck |
| 26. | by misfortune | because of bad luck |
| 27. | by mishearing | because of mishearing |
| 28. | by misinterpreting | because of misinterpretation |
| 29. | by misjudging | because of misjudgment |
| 30. | by misreading | because of misreading |
| 31. | by misremembering | because of misremembering |
| 32. | by misstep | because of a wrong step |
| 33. | by mixing it up | because of confusion |
| 34. | by oversight | because it was overlooked |
| 35. | by pure chance | by chance |
| 36. | by screwing up | because of a mistake |
| 37. | by sheer accident | by pure chance |
| 38. | by slipping up | because of a slip-up |
| 39. | completely by accident | wholly accidental |
| 40. | entirely by accident | completely accidental |
| 41. | from a false start | due to an initial misstep |
| 42. | from a misunderstanding | because you misunderstood |
| 43. | from a mix-up | because things got confused |
| 44. | from confusion | because of being confused |
| 45. | from forgetfulness | because you forgot |
| 46. | from inattention | because of not paying attention |
| 47. | in a lapse | during a lapse |
| 48. | in a moment of confusion | while confused |
| 49. | in error | done incorrectly |
| 50. | in haste | while rushing |
| 51. | in my haste | while I was rushing |
| 52. | in the heat of the moment | in a rushed moment |
| 53. | inadvertently done | done unintentionally |
| 54. | inadvertently so | in an unintended way |
| 55. | just by accident | merely accidental |
| 56. | not as I meant | not what I intended |
| 57. | not as intended | not the intended way |
| 58. | not by design | not planned |
| 59. | not deliberately | not done deliberately |
| 60. | not intended | not planned or meant |
| 61. | not intentionally | without intending it |
| 62. | not knowingly | without knowing |
| 63. | not meant to | not intended to |
| 64. | not on purpose | without intention |
| 65. | off the cuff | without preparation |
| 66. | on a whim | impulsively, not planned |
| 67. | on accident | accidentally |
| 68. | on impulse | without planning |
| 69. | only by accident | not intentionally |
| 70. | out of habit | automatically, not intentionally |
| 71. | purely by accident | entirely accidental |
| 72. | purely coincidentally | by coincidence, not intention |
| 73. | quite by accident | by chance |
| 74. | simply by accident | just accidental |
| 75. | through a mistake | because of a mistake |
| 76. | through a mix-up | because of confusion |
| 77. | through a wrong turn | because you turned incorrectly |
| 78. | through carelessness | because of carelessness |
| 79. | through error | because of a mistake |
| 80. | through miscommunication | because messages were unclear |
| 81. | through misdirection | because you were misled |
| 82. | through mismanagement | because it was handled poorly |
| 83. | through negligence | because of negligence |
| 84. | through no fault of my own | not caused by my actions |
| 85. | through oversight | because something was missed |
| 86. | under a misapprehension | while believing something untrue |
| 87. | under the wrong impression | while believing the wrong thing |
| 88. | without being aware | without awareness |
| 89. | without due care | without enough care |
| 90. | without forethought | without planning |
| 91. | without intending to | without intention |
| 92. | without intent | lacking intention |
| 93. | without knowing it | without awareness |
| 94. | without malice | with no harmful intent |
| 95. | without meaning to | without intending to |
| 96. | without noticing | without noticing it |
| 97. | without paying attention | without attention |
| 98. | without planning | not planned |
| 99. | without realizing it | without awareness |
| 100. | without thinking | without careful thought |