| occasionally(expression, adverb, time, moment, continue) |
| now and then(expression, idiom, adverb, time, moment) |
| from time to time(expression, idiom, adverb, time, moment) |
| periodically(expression, adverb, time, continue, rare) |
| on occasion(expression, idiom, adverb, time, moment) |
| at times(expression, idiom, adverb, time, moment) |
| sporadically(expression, adverb, time, continue, rare) |
| now and again(expression, idiom, adverb, time, moment) |
| every so often(expression, idiom, adverb, time, moment) |
| intermittently(expression, adverb, time, continue, rare) |
| once in a while(expression, idiom, adverb, time, moment) |
| once(expression, adverb, time, moment, period) |
| off and on(verb, expression, adverb, phrasal verb, time) |
| in some cases |
| betweentimes(expression, adverb, time, moment, period) |
| every now and then(expression, adverb, time, moment, rare) |
| infrequently(expression, adverb, time, moment, period) |
| on and off(verb, expression, adjective, adverb, phrasal verb) |
| sometime(expression, adverb, time, moment, rare) |
| time |