| No. | Item | Definition |
|---|---|---|
| 1. | aboriginal | original to a place |
| 2. | ancestral | inherited from forebears |
| 3. | ancient | very old or early |
| 4. | animalistic | like animal behavior |
| 5. | antediluvian | extremely old or primitive |
| 6. | archaic | very old-fashioned or ancient |
| 7. | archetypal | representing the original pattern |
| 8. | atavistic | reverting to ancestral traits |
| 9. | automatic | done without conscious thought |
| 10. | barbaric | extremely savage or crude |
| 11. | basal | forming a base |
| 12. | base | lowest supporting part |
| 13. | basic | forming the foundation |
| 14. | bedrock | most basic and essential |
| 15. | bestial | like a beast |
| 16. | brutal | harsh and animal-like |
| 17. | built-in | naturally part of something |
| 18. | carnal | relating to bodily desire |
| 19. | chthonic | earthy and primordial |
| 20. | coarse | rough and unrefined |
| 21. | constitutional | built into the nature |
| 22. | core | central and essential |
| 23. | crude | rough and undeveloped |
| 24. | deep-rooted | firmly established at the base |
| 25. | deep-seated | firmly rooted within |
| 26. | earliest | coming before all others |
| 27. | earthy | plain and natural |
| 28. | elemental | relating to basic forces |
| 29. | embryonic | in an early undeveloped stage |
| 30. | essential | absolutely necessary or basic |
| 31. | feral | returned to the wild |
| 32. | fierce | powerfully aggressive or wild |
| 33. | fiery | intensely passionate and raw |
| 34. | first | earliest in order |
| 35. | foundational | serving as a basis |
| 36. | fountainhead | original source |
| 37. | fundamental | essential and underlying |
| 38. | germinal | containing the first beginnings |
| 39. | ground-state | lowest basic condition |
| 40. | gut | deeply instinctive |
| 41. | hardwired | built in naturally |
| 42. | id-driven | ruled by basic urges |
| 43. | impulsive | acting on sudden urges |
| 44. | inborn | natural from birth |
| 45. | inherent | existing as a natural part |
| 46. | initial | occurring at the start |
| 47. | innate | present from birth |
| 48. | instinctive | driven by natural impulse |
| 49. | intrinsic | belonging naturally |
| 50. | libidinal | relating to instinctual desire |
| 51. | low-level | basic and underlying |
| 52. | mother-source | original source |
| 53. | naked | stripped to essentials |
| 54. | nascent | just beginning to exist |
| 55. | native | natural or inherent |
| 56. | natural | existing by nature |
| 57. | oldest | most ancient |
| 58. | organic | natural and living |
| 59. | original | present at the beginning |
| 60. | originary | relating to the beginning |
| 61. | originating | serving as a source |
| 62. | predatory | driven by hunting instinct |
| 63. | prehistoric | from before recorded history |
| 64. | prehuman | before fully human development |
| 65. | primary | first in order or importance |
| 66. | prime | first or earliest |
| 67. | primeval | from the earliest ages |
| 68. | primitive | belonging to an early stage |
| 69. | primordial | existing from the beginning |
| 70. | progenitorial | relating to earliest ancestors |
| 71. | raw | unrefined and natural |
| 72. | reflexive | automatic and instinctive |
| 73. | root | most basic source |
| 74. | rough | coarse and undeveloped |
| 75. | rudimentary | basic and undeveloped |
| 76. | rugged | rough and natural |
| 77. | savage | fierce and uncivilized |
| 78. | seed | original source or beginning |
| 79. | sensual | strongly physical and instinctive |
| 80. | source | point of origin |
| 81. | spontaneous | arising naturally and immediately |
| 82. | subconscious | below conscious awareness |
| 83. | substrate | underlying base layer |
| 84. | substructure | underlying supporting structure |
| 85. | taproot | deep central source |
| 86. | telluric | of the earth’s deep forces |
| 87. | tribal | relating to early social groups |
| 88. | uncivilized | not socially refined |
| 89. | underlying | lying beneath the surface |
| 90. | unprocessed | not refined or altered |
| 91. | unrefined | not polished or cultivated |
| 92. | unschooled | not trained or refined |
| 93. | untamed | not domesticated or controlled |
| 94. | unthinking | without deliberate thought |
| 95. | ur | original or earliest |
| 96. | virgin | untouched and original |
| 97. | virginal | pure and untouched |
| 98. | visceral | felt deep in the body |
| 99. | wellspring | original source of something |
| 100. | wild | living in a natural state |