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Webster 1913 Edition

Improbable

Im-prob′a-ble

,
Adj.
[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
.
–
Im-prob′a-ble-ness
,
Noun.
–
Im-prob′a-bly
,
adv.

Webster 1828 Edition

Improbable

IMPROB'ABLE

,
Adj.
[L. improbabilis; in and probabilis, from probo, to prove.] Not likely to be true; not to be expected under the circumstances of the case. It is always improbable that men will knowingly oppose their own interest; yet the fact is possible. It is improbable that snow will fall in July, but not incredible.

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