| recurrent(adjective, regular, irregular, routine, normal) |
| repeated(adjective, usual, regular, routine, normal) |
| regular(adjective, usual, routine, normal, customary) |
| frequent(adjective, common, usual, regular, normal) |
| continual(adjective, regular, normal, persistent, lasting) |
| periodic(adjective, regular, irregular, normal, infrequent) |
| repetitious(adjective, continuous, endless, frequent, everlasting) |
| periodical |
| persistent(adjective, regular, normal, continuous, lasting) |
| intermittent(adjective, regular, irregular, routine, recurrent) |
| cyclic(adjective, recurrent) |
| habitual(adjective, common, usual, regular, normal) |
| incessant(adjective, regular, normal, continuous, repetition) |
| repeating(verb, continuous, endless, everlasting, uninterrupted) |
| successive(regular, normal, frequent, recurrent) |
| alternate(adjective, other, regularity of recurrence periodicity) |
| chronic(adjective, persistent, continuous, lasting, continuing) |
| constant(adjective, common, regular, normal, persistent) |
| continuous(adjective, persistent, lasting, continuing, everlasting) |
| cyclical(adjective, regularity of recurrence periodicity) |