Origin of dubious
Examples from the Web for dubiously
The arts world is fuming over Obama's dubiously qualified "arts czar," and a humanities appointee who lacks a college degree.
He surveyed her dubiously, wondering why she so abruptly checked the advances he could swear she had challenged.Gilian The Dreamer|Neil Munro
Finding him in unusually good spirits one day, I dubiously and gradually approached the subject.
She wore the identical gray suit of years before and her face was still unlined and dubiously clean.Greener Than You Think|Ward Moore