Synonyms for On and on:

• a. & adv.

  •ad infinitum (adjective, adverb)
  • more relentlessly,
  • more perpetually,
  • most interminably.

• adv

  •all the time (adverb)
  • day in and day out.
  •day in and day out (adverb)
  • without exception,
  • month in month out,
  • year in year out,
  • day in day out,
  • week in week out.

• adv.

  •ad infinitum (adverb)
  • more interminably,
  • more endlessly,
  • most forever,
  • more unlimitedly,
  • more continuously,
  • most continuously,
  • most endlessly,
  • never ending,
  • most perpetually,
  • un limitedly,
  • most relentlessly,
  • most unlimitedly,
  • un-limitedly,
  • more forever.
  •away (adverb)
  • in-terminably,
  • in terminably,
  • on on.
  •continuously (adverb)
  • steadily,
  • time and time again,
  • without a break,
  • time after time,
  • ad nauseam,
  • unremitting,
  • relentless,
  • unceasingly,
  • repeatedly,
  • perpetually,
  • uninterruptedly,
  • constantly.
  •forever (adverb)
  • now forever,
  • in-finitely,
  • till end of time,
  • till end time,
  • till the end time,
  • in finitely,
  • till blue face,
  • till blue the face,
  • till blue in face.

• Other synonyms:

  •
  • never-ending,
  • everlasting,
  • lasting,
  • long-lived,
  • extended,
  • long-standing,
  • prolonged,
  • future-proof,
  • long-running,
  • eternal,
  • long-range,
  • long-lasting,
  • durable,
  • long time,
  • sustained,
  • medium term,
  • continued,
  • enduring,
  • hour after hour.
  •
  • constant,
  • eternally,
  • steady,
  • ageless,
  • long-term.
  •
  • slow.
  •
  • away.
  •
  • well.
  •
  • double.
  •
  • long.
  •anew
  • again.
  •Other relevant words:
  • repetitively,
  • at all times,
  • hourly,
  • night and day,
  • increasingly,
  • interminably,
  • ever,
  • sustainedly,
  • right along,
  • more and more,
  • perennially,
  • on end,
  • at a stretch,
  • together,
  • unvaryingly,
  • daily,
  • ceaselessly,
  • unrelievedly,
  • growingly,
  • every day,
  • every hour,
  • cumulatively,
  • ever and anon,
  • continually,
  • unbrokenly,
  • incessantly,
  • cyclically,
  • year after year,
  • Connectedly,
  • more,
  • again and again,
  • round the clock,
  • steadfastly,
  • always.