| No. | Item | Definition |
|---|---|---|
| 1. | administration | a government’s period in office |
| 2. | adolescence | the teenage period of development |
| 3. | afternoon | the period after noon |
| 4. | age | a period in history or life |
| 5. | apprenticeship | a period of training work |
| 6. | autumn | the season after summer |
| 7. | babyhood | the period of being a baby |
| 8. | bedtime | the usual time for sleep |
| 9. | boyhood | the period of being a boy |
| 10. | break | a short interruption or rest period |
| 11. | bygone days | days in the past |
| 12. | century | a period of one hundred years |
| 13. | childhood | the period of being a child |
| 14. | continuum | a continuous whole of time |
| 15. | date | a specified calendar day |
| 16. | dawn | the beginning of day |
| 17. | day | a calendar period or daylight span |
| 18. | daybreak | the first light of day |
| 19. | decade | a period of ten years |
| 20. | dinnertime | the time for the evening meal |
| 21. | duration | the length something lasts |
| 22. | dusk | the fading light after sunset |
| 23. | eon | an extremely long period |
| 24. | epoch | a significant historical period |
| 25. | era | a long historical period |
| 26. | evening | the later part of a day |
| 27. | existence | the period of being alive |
| 28. | fall | the autumn season |
| 29. | flextime | flexible working hours |
| 30. | former times | earlier periods |
| 31. | fortnight | a two-week period |
| 32. | future | time yet to come |
| 33. | gap | an interval between things |
| 34. | generation | a period marked by people’s lives |
| 35. | girlhood | the period of being a girl |
| 36. | golden age | a period of great prosperity |
| 37. | hereafter | the future time |
| 38. | heyday | the period of greatest success |
| 39. | history | the recorded past |
| 40. | hour | a point or period on a clock |
| 41. | incumbency | a period of holding a position |
| 42. | infancy | the earliest period of life |
| 43. | instance | a single occurrence or occasion |
| 44. | instant | a very brief moment |
| 45. | interlude | an intervening period or episode |
| 46. | interval | time between two events |
| 47. | lapse | a passing period or interval |
| 48. | lifespan | the length of a life |
| 49. | lifetime | the period of a person’s life |
| 50. | lunchtime | the time for the midday meal |
| 51. | mealtime | the usual time for eating |
| 52. | midday | the middle of the day |
| 53. | midnight | the middle of the night |
| 54. | millennium | a period of one thousand years |
| 55. | minute | a brief point or short period |
| 56. | moment | a particular point or brief period |
| 57. | month | one of twelve yearly periods |
| 58. | morning | the early part of a day |
| 59. | night | the dark part of a day |
| 60. | noon | midday, twelve o’clock |
| 61. | now | the present moment |
| 62. | occasion | a particular happening or opportunity |
| 63. | old age | the later period of life |
| 64. | old times | times in the past |
| 65. | olden days | times long ago |
| 66. | overtime | extra working time |
| 67. | pause | a temporary stop or interval |
| 68. | period | a length of existence or activity |
| 69. | phase | a distinct stage or period |
| 70. | present | the current time |
| 71. | prime | the best period of life or success |
| 72. | puberty | the period of sexual maturation |
| 73. | quarter | a three-month period |
| 74. | reign | a monarch’s period of rule |
| 75. | runtime | the duration of a performance |
| 76. | second | a very brief point or period |
| 77. | session | a period devoted to activity |
| 78. | shift | a scheduled period of work |
| 79. | slot | an assigned place in a schedule |
| 80. | span | the full length of time |
| 81. | spell | a short period of time |
| 82. | stage | a particular period in development |
| 83. | stretch | a continuous length of time |
| 84. | sunrise | the time the sun appears |
| 85. | teatime | the customary time for tea |
| 86. | tenure | a period of holding office |
| 87. | term | a fixed period of time |
| 88. | trimester | one of three academic periods |
| 89. | turn | one person’s allotted occasion |
| 90. | twilight | the dim light near sunrise or sunset |
| 91. | week | a seven-day period |
| 92. | weekday | a day from Monday to Friday |
| 93. | weekend | Saturday and Sunday period |
| 94. | while | a short or indefinite period |
| 95. | window | a limited period of opportunity |
| 96. | wintertime | the season of winter |
| 97. | year | a twelve-month period |
| 98. | yesterday | the day before today |
| 99. | yesteryear | the past, especially nostalgically |
| 100. | youth | the early period of life |