from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In a doubtful manner, in context of doubt or ambiguity, questionably.
from the GNU version of the Collaborative International Dictionary of English
- adv. In a doubtful manner.
from The Century Dictionary and Cyclopedia
- In a doubtful manner; with doubt or hesitation; so as to indicate or admit of doubt.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a doubtful manner
doubtful + -ly (Wiktionary)