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Pronunciation:  im'pr√Ębubul

WordNet Dictionary
  1. [adj]  too improbable to admit of belief; "a tall story"
  2. [adj]  not likely to be true or to occur or to have occurred; "legislation on the question is highly unlikely"; "an improbable event"
  3. [adj]  having a probability to low to inspire belief

IMPROBABLE is a 10 letter word that starts with I.


 Synonyms: implausible, incredible, marvellous, marvelous, supposed(a), tall(a), unbelievable, unconvincing, unlikely
 Antonyms: likely, plausible, probable



Webster's 1913 Dictionary
\Im*prob"a*ble\, a. [L. improbabilis; pref. im- not +
probabilis probable: cf. F. improbable. See {Probable}.]
Not probable; unlikely to be true; not to be expected under
the circumstances or in the usual course of events; as, an
improbable story or event.

      He . . . sent to Elutherius, then bishop of Rome, an
      improbable letter, as some of the contents discover.
-- {Im*prob"a*ble*ness}, n. -- {Im*prob"a*bly}, adv.

Thesaurus Terms
 Related Terms: absurd, crazy, distant, doubtable, doubtful, dubious, dubitable, extraordinary, fanciful, farfetched, fishy, flimsy, forced, hard to believe, hardly possible, implausible, impossible, inconceivable, incredible, insane, ludicrous, mad, more than doubtful, more than expected, out-of-the-way, past expectation, peculiar, questionable, quite another thing, remote, ridiculous, something else again, strained, strange, sudden, thin, unannounced, unanticipated, unbelievable, unconvincing, undivined, unexpected, unforeseeable, unforeseen, unguessed, unheralded, unhoped for, unlikely, unpredictable, unpredicted, unprepared for, unpromising, unrealistic, unsubstantial, unthinkable, weak, weird, wild, without warning