| No. | Item | Definition |
|---|---|---|
| 1. | adamant | refusing to change one’s mind |
| 2. | austere | plain and strict in manner |
| 3. | authoritarian | enforcing strict obedience |
| 4. | blinkered | limited and unwilling to change |
| 5. | board-stiff | extremely stiff; hard to bend |
| 6. | braced | supported firmly; made stiff |
| 7. | bullheaded | stubbornly determined; unyielding |
| 8. | buttoned-up | very formal and inflexible |
| 9. | by-the-book | following rules exactly |
| 10. | calcified | hardened; resistant to change |
| 11. | cast in stone | not able to be changed |
| 12. | cast-iron | firmly fixed; not changeable |
| 13. | ceremonious | overly formal and rule-driven |
| 14. | closed-minded | not willing to consider new ideas |
| 15. | congealed | set into a firm mass |
| 16. | conventional | following accepted standards; not flexible |
| 17. | crystallized | became fixed and definite |
| 18. | deep-seated | firmly established; hard to change |
| 19. | doctrinaire | rigidly following a doctrine |
| 20. | dogmatic | asserting opinions as unquestionable |
| 21. | draconian | extremely harsh and severe |
| 22. | entrenched | firmly established and hard to change |
| 23. | erect | upright and stiff |
| 24. | exacting | requiring great care and precision |
| 25. | fast | firmly fixed in place |
| 26. | firm | solidly fixed; not easily moved |
| 27. | fixed | set and not changeable |
| 28. | formal | following established rules or customs |
| 29. | frozen | unable to change or move |
| 30. | hard | not soft; difficult to bend |
| 31. | hardened | made hard; less flexible |
| 32. | hardheaded | stubborn; not easily persuaded |
| 33. | hardline | strict and uncompromising |
| 34. | hardnosed | tough and uncompromising |
| 35. | harsh | unpleasantly strict or rough |
| 36. | headstrong | stubbornly self-willed |
| 37. | heavy-handed | overly forceful and strict |
| 38. | hidebound | unwilling to accept new ideas |
| 39. | immovable | unable to be moved |
| 40. | immutable | unable to be changed |
| 41. | inadaptable | unable to adjust to change |
| 42. | inelastic | not able to stretch or adapt |
| 43. | inexorable | impossible to stop or change |
| 44. | inflexible | not willing or able to change |
| 45. | ingrained | deeply fixed; hard to change |
| 46. | intransigent | refusing to compromise or change |
| 47. | invariable | never changing |
| 48. | ironclad | not able to be changed |
| 49. | locked | fixed in place; not movable |
| 50. | mulish | stubborn and unyielding |
| 51. | narrow-minded | not open to different views |
| 52. | nonnegotiable | not open to discussion or change |
| 53. | obdurate | stubbornly refusing to change |
| 54. | obstinate | stubbornly refusing to change |
| 55. | ossified | become fixed and resistant to change |
| 56. | overstrict | too strict; not flexible |
| 57. | pertinacious | holding firmly; hard to change |
| 58. | perverse | stubbornly contrary; hard to change |
| 59. | pigheaded | stubbornly refusing to change |
| 60. | prim | very proper and stiff |
| 61. | proper | strictly correct; formal |
| 62. | punctilious | very exact about rules and details |
| 63. | ramrod-straight | very straight and stiff |
| 64. | recalcitrant | resisting authority or control |
| 65. | reinforced | strengthened; made more rigid |
| 66. | relentless | not easing or giving way |
| 67. | resolute | determined; not swayed |
| 68. | rigorous | very thorough and strict |
| 69. | rooted | firmly established; hard to change |
| 70. | rule-bound | tied closely to rules |
| 71. | scrupulous | very careful about rules |
| 72. | set | firmly decided; not likely to change |
| 73. | severe | very strict or harsh |
| 74. | solid | firm and stable; not flexible |
| 75. | steadfast | firmly loyal; not wavering |
| 76. | stiff | hard to bend or move |
| 77. | straight-laced | overly proper and strict |
| 78. | strict | demanding exact obedience to rules |
| 79. | stringent | strict and demanding |
| 80. | stubborn | unwilling to change or yield |
| 81. | taut | stretched tight; not slack |
| 82. | tenacious | holding firmly; not letting go |
| 83. | tensed | tightened; not relaxed |
| 84. | tight | held firmly; not loose |
| 85. | unaccommodating | not willing to make allowances |
| 86. | unadaptable | not able to adapt |
| 87. | unadjustable | not able to be adjusted |
| 88. | unalterable | not able to be altered |
| 89. | unbending | refusing to change or compromise |
| 90. | unchanging | not changing over time |
| 91. | uncompromising | not making concessions |
| 92. | unflexible | not flexible; hard to change |
| 93. | unforgiving | not allowing mistakes or variation |
| 94. | unmodifiable | not able to be modified |
| 95. | unpliable | not easily bent or influenced |
| 96. | unpliant | not yielding; not flexible |
| 97. | unresponsive | not reacting or adapting |
| 98. | unyielding | not giving way under pressure |
| 99. | willful | stubbornly insisting on one’s way |
| 100. | wooden | stiff and awkward; not flexible |