improbable

Synonyms for improbable

adj not likely

adjective. doubtful, suspicious

adjective. not likely

1590s, from assimilated form of in- (1) "not, opposite of" + probable, or else from Latin improbabilis. Related: Improbably.

A thousand schemes were afloat in his mind about the future, of the most improbable kind.

But cold reason said that escape was improbable enough for me alone.

It is not improbable that a competitive examination, at this day, might have excluded him from the army.

This hypothesis was so improbable that Darwin himself was forced to recognize it.

That nude woman in the very midst of Paris—it's improbable.'

It was insane, improbable, impossible; and yet was it true or was it false?

That the first speech was really written by Lysias is improbable.

The whole thing seems too improbable to be true, yet true it was.

It is important to know who precisely it is to whom the fact appears to be improbable.

It is most improbable; I am certain the doctors would not consent to it.