Synonyms for Improbably:

• adv.

  •improbably (adverb)
  • unlikely,
  • doubtfully.
  •unbelievably (adverb)
  • extraordinarily,
  • remarkably,
  • astonishingly.

• Other synonyms:

  •Other relevant words:
  • marvellously,
  • suddenly,
  • unimaginably,
  • wondrously,
  • legendarily,
  • fancifully,
  • diversely,
  • idealistically,
  • terrifically,
  • unconvincingly,
  • questionably,
  • abnormally,
  • strangely,
  • miraculously,
  • wonderfully,
  • tremendously,
  • inconceivably,
  • debatably,
  • unawares,
  • tally,
  • flimsily,
  • Dissimilarly,
  • dubiously,
  • disagreeably,
  • fantastically,
  • improbable,
  • fishily,
  • magniloquently,
  • impossibly,
  • absurdly,
  • grandiloquently,
  • impractically,
  • without warning.

Antonyms for Improbably:

• adv.

  • unbelievably
    plausibly, ordinarily.
  • Other antonyms:
    credibly, probably, believably.