Disbelief or uncertainty (about something); a particular instance of such disbelief or uncertainty.
I have doubts about how to convert this code to JavaScript.
A point of uncertainty; a query.
To be undecided about; to lack confidence in; to disbelieve, to question.
He doubted that was really what you meant.
To harbour suspicion about; suspect.
To anticipate with dread or fear; to apprehend.
To fill with fear; to affright.
To dread, to fear.