| recurrent(adjective, exact, ordinary, usual, steady) |
| regular(adjective, exact, regular, normal, consistent) |
| frequent(adjective, common, regular, normal, recurrent) |
| intermittent(adjective, continue, common, uncertain, regular) |
| cyclic(adjective, exact, ordinary, usual, steady) |
| periodical(noun, adjective, continue, regular, irregular) |
| cyclical(adjective, regular, repetition, recurrent, regularity of recurrence periodicity) |
| sporadic(adjective, continue) |
| occasional(adjective, continue, regular, irregular, infrequent) |
| continual(adjective, regular, normal, recurrent, repeated) |
| fitful(adjective, continue, irregular, sporadic) |
| rhythmic(adjective, regular, recurrent) |
| incessant(adjective, regular, normal, recurrent, repeated) |
| spasmodic(adjective, erratic, twitching) |
| recurring(adjective, regular, irregular, normal, infrequent) |
| repeated(adjective, regular, normal, recurrent, scheduled) |
| seasonal(adjective, usual, regular, irregular, standard) |
| routine(noun, adjective, regular, habitual) |
| usual(adjective, regular, normal, recurrent, repeated) |
| alternate(adjective, other, regularity of recurrence periodicity) |