Synonyms of off and on in English:

off and on


See definition of off and on

phrase

1‘the book he has been working at, off and on, for over 20 years’

SYNONYMS
periodically, at intervals, on and off, once in a while, every once in a while, every so often, now and again, now and then, every now and again, every now and then, from time to time, occasionally, on occasion, on occasions, on the odd occasion, at times, sometimes, sporadically, spasmodically, erratically, irregularly, intermittently, by fits and starts, in fits and starts, fitfully, discontinuously, piecemeal
interruptedly
ANTONYMS

regularly