| No. | Item | Definition |
|---|---|---|
| 1. | afraid | feeling fear or caution |
| 2. | alert | quick to notice possible trouble |
| 3. | aloof | distant and guarded |
| 4. | anxious | worried about what may happen |
| 5. | apprehensive | anxious about possible trouble |
| 6. | attentive | paying close attention |
| 7. | battlewise | experienced and alert to danger |
| 8. | buttoned down | controlled and cautious |
| 9. | buttoned-up | reserved and guarded emotionally |
| 10. | canny | careful and shrewd |
| 11. | careful | taking pains to avoid harm |
| 12. | cautious | careful to avoid danger or mistakes |
| 13. | chary | cautious and hesitant to act |
| 14. | circumspect | careful to avoid risk or offense |
| 15. | clear-eyed | seeing risks realistically |
| 16. | closemouthed | careful not to reveal much |
| 17. | concerned | worried and attentive |
| 18. | defensive | protective against possible attack |
| 19. | discerning | good at judging carefully |
| 20. | discriminating | careful in making judgments |
| 21. | distrustful | not inclined to trust |
| 22. | doubting | inclined to question or distrust |
| 23. | dubious | having doubts or suspicion |
| 24. | edgy | tense and watchful |
| 25. | experienced | knowledgeable and careful |
| 26. | eyes open | fully alert to danger |
| 27. | fearful | afraid of possible harm |
| 28. | forehanded | prepared and cautiously proactive |
| 29. | gingerly | with great care and caution |
| 30. | guard-minded | inclined to stay alert |
| 31. | guarded | careful and not easily trusting |
| 32. | guarding against | taking precautions against something |
| 33. | hard to convince | not easily persuaded |
| 34. | hardheaded | practical and not gullible |
| 35. | hawk-eyed | keenly watchful |
| 36. | hedging | acting cautiously to reduce risk |
| 37. | heedful | paying careful attention |
| 38. | hesitant | slow to act from caution |
| 39. | hypervigilant | excessively watchful for danger |
| 40. | judicious | showing sound careful judgment |
| 41. | keeping tabs | watching something carefully |
| 42. | knowing | showing informed caution |
| 43. | leery | suspicious and cautious |
| 44. | levelheaded | calm and sensible under pressure |
| 45. | looking out | watching for danger or problems |
| 46. | measured | careful and controlled |
| 47. | meek | quiet and cautious |
| 48. | mindful | aware and careful about something |
| 49. | mistrustful | having a lack of trust |
| 50. | moderate | careful and not extreme |
| 51. | nervous | anxious and cautious |
| 52. | noncommittal | avoiding firm commitment |
| 53. | not gullible | not easily fooled |
| 54. | observant | quick to notice things |
| 55. | on alert | watchful and ready |
| 56. | on guard | ready against possible danger |
| 57. | on one’s guard | carefully watchful and defensive |
| 58. | on the lookout | watching for possible trouble |
| 59. | on watch | keeping careful watch |
| 60. | open-eyed | fully aware and watchful |
| 61. | particular | careful and exacting |
| 62. | playing it safe | acting to avoid risk |
| 63. | poised | ready and self-controlled |
| 64. | prepared | ready for possible trouble |
| 65. | prudent | showing good judgment and caution |
| 66. | questioning | not accepting things too readily |
| 67. | ready | alert and prepared to act |
| 68. | realistic | aware of actual risks |
| 69. | reluctant | unwilling because of doubt or caution |
| 70. | restrained | careful and not excessive |
| 71. | reticent | cautious about speaking freely |
| 72. | risk-aware | conscious of possible dangers |
| 73. | risk-conscious | mindful of possible risks |
| 74. | scrupulous | very careful and exact |
| 75. | selective | careful about what is accepted |
| 76. | self-protective | acting to avoid harm |
| 77. | sharp-eyed | noticing details and danger quickly |
| 78. | shrewd | showing sharp practical judgment |
| 79. | skeptical | not easily convinced or trusting |
| 80. | streetwise | alert to practical dangers |
| 81. | suspicious | inclined to distrust or doubt |
| 82. | taking no chances | avoiding all unnecessary risk |
| 83. | temperate | showing self-restraint and caution |
| 84. | tentative | not fully certain or committed |
| 85. | thoughtful | careful and considerate |
| 86. | tight-lipped | unwilling to say much |
| 87. | timid | showing fear and caution |
| 88. | timorous | fearful and hesitant |
| 89. | ultracautious | extremely careful about risk |
| 90. | uneasy | slightly worried or suspicious |
| 91. | untrusting | not ready to trust |
| 92. | vigilant | keeping careful watch for danger |
| 93. | watchful | alert to possible danger |
| 94. | watching closely | observing with caution |
| 95. | weather eye open | staying alert for trouble |
| 96. | well-advised | wise and cautious |
| 97. | wide awake | fully alert and watchful |
| 98. | wise | showing good judgment |
| 99. | withdrawn | reserved and cautious with others |
| 100. | worldly-wise | experienced and cautious |