| No. | Item | Definition |
|---|---|---|
| 1. | administration | time under a leader’s government |
| 2. | adolescence | the teenage years |
| 3. | adulthood | the mature stage of life |
| 4. | age | a distinct period in history |
| 5. | apex | the top point in a period |
| 6. | ascendancy | a period of dominance |
| 7. | boom | a period of rapid growth |
| 8. | bout | a short period of activity |
| 9. | break | a separation between periods |
| 10. | bygone days | a past period |
| 11. | changeover | a switch to a new period |
| 12. | chapter | a distinct part of a story |
| 13. | childhood | the early years of life |
| 14. | climax | the most intense point |
| 15. | crisis | a time of great danger |
| 16. | crossover | a move into another period |
| 17. | culmination | the final high point |
| 18. | cycle | a recurring period or sequence |
| 19. | dark age | a time of decline or ignorance |
| 20. | date | a particular time in history |
| 21. | day | a particular time in history |
| 22. | decline | a period of decreasing strength |
| 23. | depression | a severe economic downturn period |
| 24. | dispensation | a period under a particular system |
| 25. | dominance | a period of control or power |
| 26. | downturn | a period of decline |
| 27. | ebb | a period of waning |
| 28. | emergency | a sudden critical time |
| 29. | episode | a single event or period |
| 30. | epoch | a notable period of time |
| 31. | extension | a lengthening of a period |
| 32. | fall | a period of decline |
| 33. | flowering | a time of greatest development |
| 34. | former times | times in the past |
| 35. | gap | a break between times |
| 36. | generation | a group living at one time |
| 37. | glory days | a past time of success |
| 38. | golden age | a period of great achievement |
| 39. | halcyon days | a calm, happy past period |
| 40. | hard times | a period of difficulty |
| 41. | heyday | the peak period of success |
| 42. | hiatus | a gap in a sequence |
| 43. | high point | the best moment in a period |
| 44. | historical period | a defined time in history |
| 45. | infancy | the earliest stage of life |
| 46. | interlude | a break between periods |
| 47. | interval | a time between events |
| 48. | juncture | a particular point in time |
| 49. | lean years | a time of scarcity |
| 50. | life | a person’s time alive |
| 51. | lifespan | the length of a life |
| 52. | lifetime | the span of a person’s life |
| 53. | low point | the worst point in a period |
| 54. | lull | a temporary quiet period |
| 55. | middle age | the midlife period |
| 56. | moment | a very brief time |
| 57. | occasion | a particular time for something |
| 58. | old age | the later stage of life |
| 59. | olden days | a time long past |
| 60. | opening | a favorable time period |
| 61. | passage | the movement of time |
| 62. | passing | the flow of time |
| 63. | peak | the highest level reached |
| 64. | period | a length of time with traits |
| 65. | phase | a stage in a process |
| 66. | point | a particular time or stage |
| 67. | prime | the best or most active period |
| 68. | protraction | a lengthened period of time |
| 69. | recession | a period of economic decline |
| 70. | regime | period under a government |
| 71. | reign | time a ruler is in power |
| 72. | respite | a short relief period |
| 73. | rise | a period of increasing success |
| 74. | round | a recurring phase or series |
| 75. | rule | period of governing authority |
| 76. | run | a continuous period of activity |
| 77. | season | a period marked by conditions |
| 78. | shift | a change in period or phase |
| 79. | slump | a period of reduced activity |
| 80. | span | a stretch of time |
| 81. | stage | a step in development |
| 82. | stretch | a continuous period of time |
| 83. | supremacy | a period of greatest power |
| 84. | surge | a sudden period of increase |
| 85. | tenure | time in a role or office |
| 86. | term | a fixed period of time |
| 87. | time | a particular point or span |
| 88. | timeframe | a set span for events |
| 89. | timepoint | a specific time marker |
| 90. | times | the conditions of a period |
| 91. | transition | a change from one period |
| 92. | turn | a time when something happens |
| 93. | upswing | a period of improvement |
| 94. | upturn | a period of rising activity |
| 95. | watershed | a decisive moment in history |
| 96. | while | a period of time |
| 97. | window | a limited opportunity period |
| 98. | yesteryear | a past time, long ago |
| 99. | youth | the early part of life |
| 100. | zenith | the highest point of a period |