| frequent(adjective, common, usual, steady, regular) |
| periodic(adjective, exact, ordinary, usual, steady) |
| continual(adjective, regular, persistent, constant, continuous) |
| repeated(adjective, steady, regular, routine, constant) |
| incessant(adjective, steady, regular, normal, constant) |
| intermittent(adjective, regular, irregular, routine, normal) |
| repetitive(adjective, dull, steady, boring, persistent) |
| regular(adjective, steady, regular, routine, constant) |
| constant(adjective, exact, ordinary, usual, steady) |
| cyclical(adjective, regular, continuous, repetition, regularity of recurrence periodicity) |
| recurring(adjective, regular, irregular, routine, normal) |
| perpetual(adjective, steady, regular, constant, continuous) |
| habitual(adjective, usual, regular, normal, continuous) |
| perennial(adjective, regular, routine, continuous, enduring) |
| periodical(noun, adjective, regular, irregular, routine) |
| persistent(adjective, steady, regular, constant, continuous) |
| usual(adjective, regular, normal, established, hardened) |
| monotonous(adjective, dull, regular, normal, continuous) |
| cyclic(adjective, exact, ordinary, usual, steady) |
| unremitting(adjective, continuous, continual) |