hang in doubtdoubt
The doctor was unable to type the rare disease.
Of uncertain outcome;undecided.
There is no surety he ever reached the river
He was uncertain of the meaning of the sentence.
But I'm not so sure that I want to leave New York.
Sorry, we can't confirm your reservation right now.
The doctors were unable to assign a cause for her illness.
It is by no means clear that the financial markets will not relapse into panic.
I can't ensure that he will be there in time.
Such convolutions leave the reader in a high state of uncertainty about what you just said