| No. | Item | Definition |
|---|---|---|
| 1. | aboard | while on a vessel |
| 2. | abroad | while in another country |
| 3. | across | throughout the extent of |
| 4. | afloat | while on water |
| 5. | all along | throughout the period |
| 6. | all through | throughout the whole time |
| 7. | amid | in the middle of |
| 8. | amidst | in the middle of |
| 9. | among | in the midst of |
| 10. | annually | during each year |
| 11. | as | at the time when |
| 12. | ashore | while on shore |
| 13. | at dawn | during early morning |
| 14. | at dusk | during evening twilight |
| 15. | at intervals in | from time to time in |
| 16. | at midnight | during midnight hours |
| 17. | at night | during nighttime |
| 18. | at noon | during midday |
| 19. | at play | while playing |
| 20. | at rest | while resting |
| 21. | at sea | while on the sea |
| 22. | at sunrise | during sunrise time |
| 23. | at sunset | during sunset time |
| 24. | at the height of | in the peak period of |
| 25. | at the peak of | in the highest point of |
| 26. | at the start of | when beginning |
| 27. | at the time of | when something happened |
| 28. | at the time when | during the moment when |
| 29. | at work | while working |
| 30. | away | while absent from home |
| 31. | before the end of | earlier than finishing |
| 32. | between | in the time separating |
| 33. | by day | during daytime |
| 34. | by daytime | during the day |
| 35. | by evening | during the evening period |
| 36. | by morning | during the morning period |
| 37. | by night | during nighttime |
| 38. | by nighttime | during the night |
| 39. | concurrently with | at the same time as |
| 40. | daily | during each day |
| 41. | daytime | in the day |
| 42. | for all of | through the whole of |
| 43. | for as long as | during the time that |
| 44. | for the course of | through the progress of |
| 45. | for the duration of | through the whole time of |
| 46. | for the entirety of | for all of |
| 47. | for the length of | through the whole time of |
| 48. | for the period of | through that time span |
| 49. | for the span of | through the length of |
| 50. | for the time of | through that period |
| 51. | for the whole of | through all of |
| 52. | from | starting in the time of |
| 53. | hourly | during each hour |
| 54. | in | within the time of |
| 55. | inside | within the period of |
| 56. | meantime | during that time |
| 57. | meanwhile | at the same time |
| 58. | mid | in the middle of |
| 59. | midst | middle part of a period |
| 60. | midway in | in the middle of |
| 61. | midway through | in the middle of |
| 62. | monthly | during each month |
| 63. | nightly | during each night |
| 64. | nighttime | in the night |
| 65. | off duty | while not working |
| 66. | on | at the time of |
| 67. | out | while away from home |
| 68. | over | through the course of |
| 69. | overnight | during the night |
| 70. | overseas | while in another country |
| 71. | past | in the course of |
| 72. | pending | while waiting for |
| 73. | round | throughout a period of |
| 74. | seasonally | during a season |
| 75. | simultaneous with | happening at the same time |
| 76. | since | from a point in time |
| 77. | so long as | during the time that |
| 78. | springtime | during the spring |
| 79. | summertime | during the summer |
| 80. | through | for the length of |
| 81. | throughout | for the whole time of |
| 82. | till | up to a time |
| 83. | to date | up to now |
| 84. | toward the close of | near the end of |
| 85. | toward the middle of | near the middle of |
| 86. | under | in the time of rule by |
| 87. | until | up to the time of |
| 88. | up till | until a point in time |
| 89. | up to | until a point in time |
| 90. | up until | until a particular time |
| 91. | upon | at the time of |
| 92. | via | by way of |
| 93. | weekly | during each week |
| 94. | when | at the time that |
| 95. | whenever | at any time that |
| 96. | while | at the same time as |
| 97. | whilst | while; chiefly British |
| 98. | wintertime | during the winter |
| 99. | within | inside the time limits of |
| 100. | yearly | during each year |

