| No. | Item | Definition |
|---|---|---|
| 1. | a lot as one word | Writing alot instead of a lot |
| 2. | adjective-adverb confusion | Wrong modifier form used |
| 3. | affect-effect confusion | Affect and effect mixed up |
| 4. | apostrophe error | Wrong apostrophe use or omission |
| 5. | appositive comma error | Appositive commas used incorrectly |
| 6. | article error | Wrong or missing article |
| 7. | auxiliary verb error | Helping verb used incorrectly |
| 8. | awkward phrasing | Unnatural or clumsy wording |
| 9. | between-among confusion | Prepositions used incorrectly |
| 10. | can-may confusion | Ability and permission confused |
| 11. | capitalization error | Incorrect use of capital letters |
| 12. | colon misuse | Colon used incorrectly |
| 13. | comma after subject | Comma wrongly splits subject and verb |
| 14. | comma before because | Comma misused before because |
| 15. | comma misuse | Comma used incorrectly or omitted |
| 16. | comma splice | Independent clauses joined by comma |
| 17. | comparative misuse | Wrong comparative form used |
| 18. | conjunction error | Conjunction used incorrectly |
| 19. | could-of error | Nonstandard form for could have |
| 20. | dangling modifier | Modifier lacks a clear target |
| 21. | dash misuse | Dash used incorrectly |
| 22. | determiner error | Wrong determiner used |
| 23. | double negative | Two negatives create incorrect meaning |
| 24. | ellipsis misuse | Ellipsis used incorrectly |
| 25. | embedded question error | Indirect question word order wrong |
| 26. | farther-further confusion | Distance and extent confused |
| 27. | faulty parallelism | Items in series lack matching form |
| 28. | fewer-less confusion | Count and mass terms confused |
| 29. | fragmented clause | Dependent clause standing alone |
| 30. | gerund-infinitive error | Wrong verbal form after verb |
| 31. | good-well confusion | Adjective and adverb confused |
| 32. | homophone confusion | Similar-sounding words mixed up |
| 33. | hyphen error | Hyphen used incorrectly |
| 34. | if-whether confusion | Conditional and choice confused |
| 35. | illogical comparison | Unlike things compared improperly |
| 36. | in-into confusion | Position and movement confused |
| 37. | incomplete comparison | Comparison missing second element |
| 38. | indefinite pronoun error | Indefinite pronoun used incorrectly |
| 39. | inversion error | Word order inverted incorrectly |
| 40. | irregular verb error | Wrong irregular verb form |
| 41. | its-it’s confusion | Possessive and contraction confused |
| 42. | lay-lie confusion | Lay and lie mixed up |
| 43. | lose-loose confusion | Lose and loose mixed up |
| 44. | lowercase i error | Pronoun I not capitalized |
| 45. | may-might confusion | Modal verbs used incorrectly |
| 46. | misplaced modifier | Modifier placed near wrong word |
| 47. | missing comma after intro | Introductory element lacks comma |
| 48. | missing serial comma | Final list comma omitted |
| 49. | misused transition | Transition word used incorrectly |
| 50. | mixed construction | Sentence combines incompatible structures |
| 51. | modal verb error | Modal verb used incorrectly |
| 52. | mood error | Wrong verb mood used |
| 53. | negation error | Negative structure formed incorrectly |
| 54. | nominalization overuse | Too many noun forms used |
| 55. | nonrestrictive clause comma | Comma missing around added clause |
| 56. | nonstandard contraction | Improper or informal contraction used |
| 57. | number shift | Unnecessary singular-plural change |
| 58. | object pronoun error | Wrong object pronoun used |
| 59. | parenthesis error | Parentheses used incorrectly |
| 60. | passive voice overuse | Too many passive constructions |
| 61. | person shift | Unnecessary change in person |
| 62. | preposition error | Wrong or missing preposition |
| 63. | pronoun case error | Wrong pronoun form used |
| 64. | pronoun reference error | Pronoun refers unclearly |
| 65. | pronoun-antecedent disagreement | Pronoun does not match its noun |
| 66. | punctuation inside quotes | Quote punctuation placed incorrectly |
| 67. | quantifier error | Wrong quantity word used |
| 68. | question formation error | Question structure formed incorrectly |
| 69. | quotation mark error | Quotation marks used incorrectly |
| 70. | redundancy | Unnecessary repetition of meaning |
| 71. | reflexive pronoun error | Reflexive pronoun used incorrectly |
| 72. | relative adverb error | Where, when, why used incorrectly |
| 73. | relative clause error | Relative clause formed incorrectly |
| 74. | relative pronoun error | Wrong relative pronoun used |
| 75. | restrictive clause comma | Comma wrongly used with essential clause |
| 76. | run-on sentence | Two sentences joined without punctuation |
| 77. | semicolon comma mix-up | Semicolon and comma confused |
| 78. | semicolon misuse | Semicolon used incorrectly |
| 79. | sentence fragment | Incomplete sentence presented as complete |
| 80. | should-of error | Nonstandard form for should have |
| 81. | spelling error | Word spelled incorrectly |
| 82. | split infinitive | Infinitive separated by another word |
| 83. | subject-verb disagreement | Subject and verb do not match |
| 84. | superlative misuse | Wrong superlative form used |
| 85. | tense inconsistency | Tenses shift without reason |
| 86. | than-then confusion | Than and then mixed up |
| 87. | there-their-they’re error | Common there homophone mix-up |
| 88. | title capitalization error | Title words capitalized incorrectly |
| 89. | to-too-two confusion | Similar words confused |
| 90. | unnecessary comma | Comma inserted without need |
| 91. | verb form error | Incorrect verb form used |
| 92. | verb omission | Required verb is missing |
| 93. | verb tense shift | Unnecessary change in verb tense |
| 94. | which-that confusion | Relative pronouns used incorrectly |
| 95. | who-whom error | Who and whom confused |
| 96. | word order error | Words arranged incorrectly |
| 97. | wordiness | Using more words than needed |
| 98. | would-of error | Nonstandard form for would have |
| 99. | wrong word choice | Incorrect word used |
| 100. | your-you’re confusion | Possessive and contraction confused |
