| No. | Item | Definition |
|---|---|---|
| 1. | abreast | side by side together |
| 2. | accompanied by | occurring together with |
| 3. | all at once | all happening together |
| 4. | along with | together with something else |
| 5. | alongside | together with something else |
| 6. | also | in addition at that time |
| 7. | as one | together in unison |
| 8. | as well | also at the same time |
| 9. | at once | immediately or simultaneously |
| 10. | at one time | during the same period |
| 11. | at the same moment | at an identical moment |
| 12. | beside | next to; together with |
| 13. | besides | in addition; also |
| 14. | co-occurrence | happening together in time |
| 15. | co-occurring | happening together at once |
| 16. | co-temporal | existing in the same time |
| 17. | co-temporally | during the same period |
| 18. | coactively | acting together at once |
| 19. | coetaneous | of the same age or time |
| 20. | coetaneously | existing at the same time |
| 21. | coeval | from the same period |
| 22. | coevally | existing at the same time |
| 23. | coexistent | existing together at once |
| 24. | coexisting | existing at the same time |
| 25. | coexistingly | existing together at once |
| 26. | cohappening | happening together at once |
| 27. | coincident | occurring at the same time |
| 28. | coincidentally | happening at the same moment |
| 29. | coinciding with | happening together with |
| 30. | coinstantaneously | at exactly the same instant |
| 31. | collectively | as a combined whole |
| 32. | concurrent | happening during the same period |
| 33. | concurrently | occurring during the same period |
| 34. | conjointly | together in combination |
| 35. | contemporaneous | belonging to the same time |
| 36. | contemporaneously | during the same period |
| 37. | cooperatively | working together at once |
| 38. | coupled with | combined together with |
| 39. | directly | immediately; at once |
| 40. | during | through the same period |
| 41. | even as | while at the same time |
| 42. | forthwith | immediately; at once |
| 43. | going together | happening or fitting together |
| 44. | hand in hand | closely together and linked |
| 45. | in company | together with others |
| 46. | in concert | acting together harmoniously |
| 47. | in conjunction | together with another thing |
| 48. | in lockstep | moving together exactly |
| 49. | in parallel | alongside in a matching way |
| 50. | in phase | in matching timing |
| 51. | in real time | as it happens |
| 52. | in step | moving in matching timing |
| 53. | in sync | in matching timing |
| 54. | in tandem | working or happening together |
| 55. | in the meantime | during the same period |
| 56. | in unison | acting at the same time |
| 57. | jointly | in combination with another thing |
| 58. | just as | at the same moment |
| 59. | live | as it happens now |
| 60. | meanwhile | during the same time |
| 61. | mutually | in a shared reciprocal way |
| 62. | on cue | at the expected moment |
| 63. | on the spot | immediately at that place |
| 64. | once | on one occasion; at once |
| 65. | opportunely | at a favorable time |
| 66. | over | during that same period |
| 67. | overlapped | happened during the same period |
| 68. | overlapping | happening during the same period |
| 69. | parallel | happening alongside another thing |
| 70. | parallelly | in a parallel manner |
| 71. | promptly | without delay; at once |
| 72. | right away | immediately; at once |
| 73. | right then | at that exact time |
| 74. | running together | occurring at once together |
| 75. | seasonably | at a suitable time |
| 76. | shoulder to shoulder | standing or acting together |
| 77. | side by side | next to and together |
| 78. | simultaneous | happening at the same moment |
| 79. | simultaneously | happening at the same moment |
| 80. | straightaway | immediately; at once |
| 81. | synchronic | existing in the same time |
| 82. | synchronically | with simultaneous timing |
| 83. | synchronous | happening in the same time |
| 84. | synchronously | in the same timing |
| 85. | then | at that same time |
| 86. | thereupon | immediately at that time |
| 87. | therewith | with that at the same time |
| 88. | therewithal | with that at once |
| 89. | throughout | during the whole period |
| 90. | timely | at the appropriate time |
| 91. | together | at once with something else |
| 92. | too | also at the same time |
| 93. | when | at the time that |
| 94. | whereas | while at the same time |
| 95. | while | during the same time |
| 96. | whilst | while at the same time |
| 97. | withal | at the same time also |
| 98. | without delay | immediately; at once |
| 99. | without pause | immediately and continuously |
| 100. | without waiting | immediately; not later |

