Synonyms for Not likely:

• adj.

  •Other relevant words: (adjective)
  • unheard of,
  • outside chance,
  • unlikely.
  •unlikely (adjective)
  • implausible,
  • remote,
  • contrary,
  • out of the ordinary,
  • dubious,
  • rare,
  • inconceivable,
  • questionable,
  • strange,
  • unbelievable,
  • unimaginable,
  • incredible,
  • unconvincing,
  • unheard-of,
  • absurd,
  • faint,
  • untoward,
  • doubtful,
  • slight.

• adv.

  •hardly (adverb)
  • imperceptibly,
  • simply,
  • not markedly,
  • barely,
  • almost inconceivably,
  • not notably,
  • sporadically,
  • by a hair,
  • sparsely,
  • not a bit,
  • Scantly,
  • not at all,
  • practically,
  • infrequently,
  • comparatively,
  • faintly,
  • rarely,
  • not much,
  • only,
  • only just,
  • slightly,
  • once in a blue moon,
  • not measurably,
  • by no means,
  • almost not,
  • just,
  • no more than,
  • little,
  • pretty near,
  • somewhat,
  • not often,
  • seldom,
  • not quite,
  • not noticeably,
  • perceptibly,
  • with trouble,
  • gradually,
  • no way,
  • not by much,
  • detectably.

• adv

  •hardly (adverb)
  • once in blue moon.
  •Other relevant words: (adverb)
  • hardly.

• Other synonyms:

  •Other relevant words (noun):
  • impossible,
  • improbable.

Antonyms for Not likely:

• adj.

  • unlikely
    imaginable, believable, regular, reasonable, plausible, common, tenable, credible, likely, usual, probably, possible, probable.

• adv.

  • hardly
    frequently, very.