from The Century Dictionary and Cyclopedia
- Hesitatingly; doubtingly; as if in doubt.
Sorry, no etymologies found.
"Perhaps" -- very dubitatively -- "a portmanteau or bag might help him out of his temporary difficulties."
He flicked the horse dubitatively, and turned his head, first to Robert, next to Rhoda; and then he chuckled aloud:
"Yes," Westray said dubitatively; "I suppose it couldn't be construed into attempting to outwit her, could it?