| No. | Item | Definition |
|---|---|---|
| 1. | acute | keenly perceptive |
| 2. | alert | quick to notice things |
| 3. | alive to | aware of and responsive to |
| 4. | astute | quick to notice and judge |
| 5. | attentive | paying close attention |
| 6. | attuned | sensitively aware |
| 7. | awake | mentally alert and aware |
| 8. | aware | conscious of what is happening |
| 9. | bright | quick to notice and understand |
| 10. | canny | carefully noticing advantages |
| 11. | careful | taking close notice |
| 12. | chary | cautiously watchful |
| 13. | checking | looking carefully for issues |
| 14. | circumspect | carefully watchful and cautious |
| 15. | clear-sighted | seeing things accurately |
| 16. | clever | quick to notice patterns |
| 17. | clued-in | aware of what is happening |
| 18. | concentrated | closely focused and attentive |
| 19. | conscious | aware of surroundings or details |
| 20. | detail-minded | focused on small details |
| 21. | detail-oriented | careful about small details |
| 22. | detecting | noticing something hidden |
| 23. | discerning | good at noticing differences |
| 24. | discriminating | noticing fine differences |
| 25. | eagle-eyed | very quick to spot things |
| 26. | engaged | actively attentive and aware |
| 27. | exact | careful about small details |
| 28. | examining | looking closely at details |
| 29. | eyes-open | fully aware and watchful |
| 30. | familiar | aware through experience |
| 31. | far-sighted | aware of future consequences |
| 32. | focused | giving close attention |
| 33. | foreseeing | noticing what may happen |
| 34. | guarded | carefully watchful and cautious |
| 35. | hawk-eyed | extremely quick to notice |
| 36. | heedful | paying careful attention |
| 37. | insightful | showing deep noticing |
| 38. | inspecting | examining closely |
| 39. | intelligent | good at noticing and understanding |
| 40. | intuitive | quickly sensing what matters |
| 41. | investigative | careful in noticing facts |
| 42. | keen | quick to notice things |
| 43. | knowing | showing informed awareness |
| 44. | lookout | watchful for danger |
| 45. | methodical | carefully attentive in process |
| 46. | meticulous | noticing fine details carefully |
| 47. | mindful | carefully aware of surroundings |
| 48. | monitoring | watching closely over time |
| 49. | nimble-minded | quick to notice mentally |
| 50. | noticing | paying attention to details |
| 51. | observing | noticing what is happening |
| 52. | on alert | watchful and ready |
| 53. | on guard | watchful and ready |
| 54. | on the ball | quick to notice and understand |
| 55. | on the lookout | watching carefully for something |
| 56. | on watch | serving in alert attention |
| 57. | open-eyed | watchful and aware |
| 58. | painstaking | taking great care with details |
| 59. | particular | careful about details |
| 60. | penetrating | noticing hidden meanings |
| 61. | perceiving | noticing through the senses |
| 62. | perceptive | good at noticing details |
| 63. | perspicacious | keenly perceptive and insightful |
| 64. | precise | careful and exact in noticing |
| 65. | prepared | ready and alert |
| 66. | probing | seeking hidden details |
| 67. | punctilious | very attentive to details |
| 68. | questioning | noticing possible problems |
| 69. | quick-witted | fast to notice and respond |
| 70. | ready | alert and able to respond |
| 71. | receptive | open and responsive to signals |
| 72. | recognizing | noticing and identifying |
| 73. | reflective | thoughtfully aware |
| 74. | registering | mentally noticing something |
| 75. | responsive | quick to notice and react |
| 76. | scanning | looking over for details |
| 77. | scrutinizing | closely examining details |
| 78. | searching | closely examining for details |
| 79. | sensitive | quick to notice changes |
| 80. | sharp-eyed | noticing small visual details |
| 81. | shrewd | quick to notice realities |
| 82. | studious | carefully attentive to details |
| 83. | surveying | looking over attentively |
| 84. | switched-on | alert and mentally aware |
| 85. | systematic | attentive in an organized way |
| 86. | taking note | noticing and remembering |
| 87. | thorough | careful to notice everything |
| 88. | thoughtful | showing attentive consideration |
| 89. | tracking | following closely and noticing changes |
| 90. | tuned-in | aware of what matters |
| 91. | unsleeping | constantly watchful |
| 92. | vigilant | carefully on guard |
| 93. | wakeful | alert and watchful |
| 94. | wary | watchful for possible trouble |
| 95. | watchful | carefully noticing what happens |
| 96. | watching | looking with attention |
| 97. | weatherwise | alert to likely changes |
| 98. | wide-awake | fully alert and noticing |
| 99. | with it | alert and aware |
| 100. | worldly-wise | aware of how things work |
