| No. | Term | Definition |
|---|---|---|
| 1. | Adolescent | In the teen years; maturing. |
| 2. | Ageless | Not showing signs of age. |
| 3. | Aprentice-aged | At beginner, training stage. |
| 4. | Babe | Very young child; infant. |
| 5. | Baby-faced | Having a youthful-looking face. |
| 6. | Bantam | Small and youthful in build. |
| 7. | Beardless | Lacking a beard; boyish. |
| 8. | Blooming | Fresh, healthy, and youthful. |
| 9. | Boyish | Like a boy; youthful manner. |
| 10. | Bright-eyed | Alert, lively, and youthful. |
| 11. | Callow | Inexperienced; immature. |
| 12. | Cherubic | Innocent-looking; angelic-faced. |
| 13. | Childish | Immature; not fully grown. |
| 14. | Childlike | Innocent, trusting, or playful. |
| 15. | Developing | Still growing or forming. |
| 16. | Dewy | Fresh and youthful in appearance. |
| 17. | Downy | Soft, like early facial hair. |
| 18. | Early-blooming | Maturing earlier than usual. |
| 19. | Early-stage | At an initial phase. |
| 20. | Emergent | Just beginning to appear. |
| 21. | Fledgling | New and inexperienced. |
| 22. | Fresh | New, vigorous, not worn. |
| 23. | Fresh-faced | Healthy, youthful-looking. |
| 24. | Frosh | First-year student; newcomer. |
| 25. | Green | Inexperienced; not seasoned. |
| 26. | Greenhorn | A complete beginner. |
| 27. | Growing | Increasing in size or maturity. |
| 28. | Grown-up-in-training | Not fully mature yet. |
| 29. | Guileless | Innocent; lacking cunning. |
| 30. | Hatchling | Newly emerged; very young. |
| 31. | High-school-aged | Of typical teen school age. |
| 32. | Hopeful | Optimistic, youthful in spirit. |
| 33. | Immature | Not fully developed or grown. |
| 34. | In bloom | At peak freshness; youthful. |
| 35. | Infant | Very young baby. |
| 36. | Innocent | Unworldly; free of guilt. |
| 37. | Junior | Younger; lower in rank. |
| 38. | Juvenile | Not adult; youthful. |
| 39. | Kid | Child; young person. |
| 40. | Kiddish | Somewhat childish or immature. |
| 41. | Kindergarten-aged | Of early school age. |
| 42. | Lad | Boy or young man. |
| 43. | Lass | Girl or young woman. |
| 44. | Late-blooming | Maturing later than usual. |
| 45. | Learner | Beginner; still gaining skills. |
| 46. | Little | Small; very young. |
| 47. | Maiden | Unmarried girl or young woman. |
| 48. | Maturing | Growing toward adulthood. |
| 49. | Minor | Under legal adult age. |
| 50. | Neophyte | Newcomer; novice. |
| 51. | Newborn | Just born; very young infant. |
| 52. | Newly hatched | Just begun; very young. |
| 53. | Newly minted | New; recently begun. |
| 54. | Novice | Beginner; inexperienced. |
| 55. | Nursery-aged | Of preschool age. |
| 56. | Offspring | A child; descendant. |
| 57. | On the cusp | Near a new stage. |
| 58. | Papoose | A small child; infant. |
| 59. | Peach-fuzzed | With very light facial hair. |
| 60. | Pint-sized | Small, childlike in size. |
| 61. | Preschool-aged | Before primary school age. |
| 62. | Preteen | Between childhood and teen years. |
| 63. | Pubescent | Entering puberty. |
| 64. | Puerile | Childishly silly or immature. |
| 65. | Rookie | New to a role. |
| 66. | Rudimentary | Basic; early in development. |
| 67. | School-age | Old enough for school. |
| 68. | Schoolboyish | Like a schoolboy; youthful. |
| 69. | Second-generation | Newer; not long-established. |
| 70. | Seedling | A very young plant. |
| 71. | Senior-to-be | Approaching later stage; still early. |
| 72. | Sprightly | Lively and energetic. |
| 73. | Springlike | Fresh, lively, youthful. |
| 74. | Sprouting | Beginning to grow. |
| 75. | Still wet behind ears | Very inexperienced; new. |
| 76. | Teen | A person aged 13–19. |
| 77. | Teenage | Relating to teen years. |
| 78. | Teenaged | In the teenage years. |
| 79. | Tender | Delicate; not hardened by age. |
| 80. | Tender-aged | Very young; not mature. |
| 81. | Tiny | Very small; childlike. |
| 82. | Tyro | Beginner; novice. |
| 83. | Unfledged | Not fully developed; inexperienced. |
| 84. | Unseasoned | Inexperienced; not practiced. |
| 85. | Untried | Not yet tested or experienced. |
| 86. | Up-and-coming | Promising; early in career. |
| 87. | Verdant | Green; fresh and vigorous. |
| 88. | Vigorous | Strong, energetic, full of life. |
| 89. | Virgin | Unspoiled; not yet used. |
| 90. | Whelp | A young child or animal. |
| 91. | Whippersnapper | Impertinent, very young person. |
| 92. | Wide-eyed | Naive; easily impressed. |
| 93. | Young-at-heart | Having a youthful spirit. |
| 94. | Youngish | Somewhat youthful; not old. |
| 95. | Youngster | A child or very young person. |
| 96. | Younker | A young person; youngster. |
| 97. | Youthful-looking | Appearing younger than age. |
| 98. | Zero-experience | Having no prior experience. |
| 99. | Zygotic | At earliest developmental stage. |
