wielce nieprawdopodobny

It would be highly unlikely to find one so early in time.

You read things most days that seem highly unlikely to be true.

It is highly unlikely that you would be happy in our time.

Though from what I'd seen of their parents, it seemed highly unlikely.

I would, however, say the example you just gave is highly unlikely.

Even if he does fall in love with one or all of you, he's highly unlikely to feel up to doing anything about it.

It is highly unlikely they will be in the future.

The only thing is that I see such a situation as highly unlikely.

Less than two months ago, the trade seemed highly unlikely.

At the moment, it seemed highly unlikely that he would ever see her again.

Under the circumstances it is highly improbable that they might not have heard of each other.

It all seems credible, even though we know that this story is a highly improbable one.

Till this moment, he had always thought that a highly improbable act, totally out of character.

They heard highly improbable human speech where nothing of the sort should be.

While not technically an impossible task, it did seem to be, as time went on, highly improbable.

It seems highly improbable that this can be forged in 15 months.

The number may sound highly improbable, given that a political convention only lasts for four days.

But now it was like a highly improbable fairy palace.

Though not impossible, this would have been a highly improbable incident.

Did those responsible not consider such a disaster to be highly improbable?