| epochal(adjective, time, period, iteration) |
| fluctuating(adjective, time, period, iteration) |
| infrequent(adjective, time, period, iteration) |
| intermittent(adjective, time, period, iteration) |
| interrupted(adjective, time, period, iteration) |
| intervallic(adjective, time, period, iteration) |
| isochronal(adjective, time, period, iteration) |
| isochronous(adjective, time, period, iteration) |
| occasional(adjective, time, period, iteration) |
| on-again-off-again(adjective, time, period, iteration) |
| orbital(adjective, time, period, iteration) |
| perennial(adjective, time, period, iteration) |
| periodic(adjective, time, period, iteration) |
| periodical(adjective, time, period, iteration) |
| recurrent(adjective, time, period, iteration) |
| recurring(adjective, time, period, iteration) |
| regular(adjective, time, period, iteration) |
| repeated(adjective, time, period, iteration) |
| rhythmic(adjective, time, period, iteration) |
| routine(adjective, time, period, iteration) |