| No. | Item | Definition |
|---|---|---|
| 1. | alert | quick to notice danger |
| 2. | apprehensive | anxious about possible trouble |
| 3. | astute | quick to judge situations |
| 4. | attentive | watching and listening carefully |
| 5. | balanced | sensible and controlled |
| 6. | braced | mentally prepared for trouble |
| 7. | buttoned-down | conservative and restrained |
| 8. | buttoned-up | emotionally restrained and private |
| 9. | cagey | reluctant to give information |
| 10. | canny | careful and shrewd |
| 11. | careful | taking pains to avoid mistakes |
| 12. | cautious | careful to avoid risk or trouble |
| 13. | chary | cautious and hesitant |
| 14. | circumspect | careful not to take risks |
| 15. | closemouthed | not willing to talk |
| 16. | conservative | avoiding unnecessary risk or change |
| 17. | controlled | kept in check |
| 18. | cool-headed | calm and sensible under pressure |
| 19. | decorous | showing proper restraint |
| 20. | defensive | protective and wary |
| 21. | deliberate | done slowly and carefully |
| 22. | demure | modest and reserved |
| 23. | diplomatic | careful and tactful |
| 24. | discerning | showing careful good judgment |
| 25. | discreet | careful and restrained in speech |
| 26. | discriminating | careful in making choices |
| 27. | distrustful | showing lack of trust |
| 28. | doubtful | uncertain and wary |
| 29. | equivocal | open to more than one meaning |
| 30. | forearmed | prepared in advance |
| 31. | formal | reserved and proper |
| 32. | gingerly | with extreme care |
| 33. | grave | serious and cautious |
| 34. | guarding | watching over for protection |
| 35. | hedged | limited or protected cautiously |
| 36. | heedful | paying careful attention |
| 37. | hesitant | slow to act or speak |
| 38. | impassive | showing little emotion |
| 39. | judicious | showing careful good judgment |
| 40. | laconic | brief and sparing with words |
| 41. | leery | cautious because of suspicion |
| 42. | level-headed | sensible and calm |
| 43. | low-key | restrained and understated |
| 44. | measured | controlled and deliberate |
| 45. | mistrustful | not easily trusting |
| 46. | moderate | avoiding excess or extremes |
| 47. | mum | silent and not revealing |
| 48. | noncommittal | avoiding clear commitment |
| 49. | observant | quick to notice details |
| 50. | on edge | tense and watchful |
| 51. | on guard | ready against possible danger |
| 52. | on standby | ready for possible action |
| 53. | on the alert | watchful for possible trouble |
| 54. | on watch | keeping careful lookout |
| 55. | particular | careful about details or choices |
| 56. | poised | ready and controlled |
| 57. | poker-faced | showing no emotion |
| 58. | polite | showing restrained good manners |
| 59. | prepared | ready and cautious |
| 60. | private | not open about personal matters |
| 61. | proper | correct and restrained |
| 62. | protecting | keeping safe from harm |
| 63. | protective | acting to prevent harm |
| 64. | prudent | showing good judgment and caution |
| 65. | qualified | limited or cautious in expression |
| 66. | quiet | not saying much |
| 67. | ready | set for immediate action |
| 68. | reluctant | unwilling or cautious about acting |
| 69. | reserved | slow to reveal feelings or thoughts |
| 70. | restrained | kept under careful control |
| 71. | reticent | not revealing much in speech |
| 72. | risk-averse | avoiding risk whenever possible |
| 73. | risk-aware | conscious of possible risks |
| 74. | safe | careful to avoid danger |
| 75. | savvy | shrewd and alert |
| 76. | secretive | inclined to hide information |
| 77. | self-controlled | able to control feelings |
| 78. | sensible | practical and careful |
| 79. | shrewd | showing sharp practical judgment |
| 80. | shy | reserved and hesitant |
| 81. | silent | not speaking or revealing |
| 82. | skeptical | doubtful and cautious |
| 83. | streetwise | alert to practical dangers |
| 84. | suspicious | inclined to distrust |
| 85. | taciturn | using few words |
| 86. | tactful | careful not to offend |
| 87. | temperate | moderate and self-restrained |
| 88. | tempered | moderated or kept in check |
| 89. | tentative | not fully certain or committed |
| 90. | tight-lipped | unwilling to speak freely |
| 91. | timorous | fearful and hesitant |
| 92. | uncommunicative | not willing to talk |
| 93. | understated | expressed in a restrained way |
| 94. | unflappable | remaining calm under pressure |
| 95. | unforthcoming | not giving much information |
| 96. | vigilant | carefully alert and observant |
| 97. | wary | alert to possible danger |
| 98. | watchful | keeping close attention for danger |
| 99. | wised-up | made cautious by experience |
| 100. | withdrawn | keeping apart from others |
