OCCASIONALLY, now and then, from time to time, sometimes, every so often, (every) now and again, at times, on occasion(s), (every) once in a while; periodically, once in a blue moon.
2192; headword
OCCASIONALLY, now and then, from time to time, sometimes, every so often, (every) now and again, at times, on occasion(s), (every) once in a while; periodically, once in a blue moon.
2192; headword
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012