Hypertext Webster Gateway: "improbable"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
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.
From WordNet (r) 1.7 (wn)
improbable
adj 1: not likely to be true or to occur or to have occurred;
"legislation on the question is highly unlikely"; "an
improbable event" [syn: {unlikely}] [ant: {probable}]
2: having a probability to low to inspire belief [syn: {unbelievable},
{unconvincing}, {unlikely}]
3: too improbable to admit of belief; "a tall story" [syn: {marvelous},
{marvellous}, {tall(a)}]
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