Now and again is defined as something occasional as opposed to something that happens regularly all the time.
Periodically is defined as something done occasionally.
Every now and then is defined as something that is done occasionally, but not at any regular interval or schedule.
now and then or here and there
(Law) In whatever status exists at various times.
Find another word for now-and-then. In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for now-and-then, like: occasionally, now-and-again, periodically, every-so-often, not often, intermittently, every now and then, once and again, once-in-a-while, once-or-twice and sporadically.