1
[ adjective ] not likely to be true or to occur or to have occurred

Synonyms

unlikely

Examples

"legislation on the question is highly unlikely" "an improbable event"

Used in print

(LeRoy Fothergill, "Biological Warfare", in Peter...)

Moreover , it should not be so fastidious in its growth requirements as to make production on a militarily significant scale improbable .

Related terms

probable supposed

2
[ adjective ] having a probability to low to inspire belief

Related terms

implausible

3
[ adjective ] too improbable to admit of belief

Examples

"a tall story"

Related terms

incredible

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