'Improbable' definitions:
Definition of 'improbable'
From: WordNet
adjective
Not likely to be true or to occur or to have occurred; "legislation on the question is highly unlikely"; "an improbable event" [syn: improbable, unlikely] [ant: likely, probable]
adjective
Having a probability too low to inspire belief [syn: improbable, unbelievable, unconvincing, unlikely]
adjective
Too improbable to admit of belief; "a tall story" [syn: improbable, marvelous, marvellous, tall(a)]
Definition of 'Improbable'
From: GCIDE
- Improbable \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. [1913 Webster]
- He . . . sent to Elutherius, then bishop of Rome, an improbable letter, as some of the contents discover. --Milton. -- {Im*prob"a*ble*ness}, n. -- {Im*prob"a*bly}, adv. [1913 Webster]
Synonyms of 'improbable'
From: Moby Thesaurus
- 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