| successively(adverb, under, continuously, fittingly, conventionally) |
| by turns(expression, idiom, adverb, interchangeably) |
| consecutively(adverb, under, continuously, successively, interchangeably) |
| in order(expression, adjective, adverb, logical, ensuing) |
| in sequence(expression, adjective, adverb, logical, under) |
| sequentially(adverb, under, continuously, successively) |
| even |
| following(adjective, adverb, running, logical, under) |
| off and on(expression, idiom, adverb, interchangeably) |
| one after another(expression, adjective, idiom, adverb, logical) |
| one by one(expression, idiom, adverb) |
| orderly(adverb, fittingly, conventionally, sprucely) |
| sequential(adjective, adverb, running, logical, consecutive) |
| alternately |
| as a choice(expression, idiom, either, conversely, preferentially) |
| as a substitute(expression, idiom, either, conversely, preferentially) |
| as an alternative(expression, idiom, either, conversely, preferentially) |
| au pair |
| by stages |
| every other |