| at the same time(expression, time, period, simultaneity) |
| in sync(expression, time, period, simultaneity) |
| accompanying(adjective, time, period, simultaneity) |
| agreeing(adjective, time, period, simultaneity) |
| coetaneous(adjective, time, period, simultaneity) |
| coeval(adjective, time, period, simultaneity) |
| coexistent(adjective, time, period, simultaneity) |
| coexisting(adjective, time, period, simultaneity) |
| coincident(adjective, time, period, simultaneity) |
| coinciding(adjective, time, period, simultaneity) |
| concurrent(adjective, time, period, simultaneity) |
| concurring(adjective, time, period, simultaneity) |
| constant(adjective, constancy, irregularity, infrequency) |
| contemporaneous(adjective, time, period, simultaneity) |
| contemporary(adjective, time, period, simultaneity) |
| continual(adjective, constancy, irregularity, infrequency) |
| infrequent(adjective, constancy, irregularity, infrequency) |
| instantaneous(adjective, time, period, simultaneity) |
| irregular(adjective, constancy, irregularity, infrequency) |
| lasting(adjective, constancy, irregularity, infrequency) |