Dictionary
doubt•ful
Pronunciation: (dout'ful), [key]—
adj.
1. of uncertain outcome or result.
2. admitting of or causing doubt; uncertain; ambiguous.
3. unsettled in opinion or belief; undecided; hesitating.
4. of equivocal or questionable character:
His tactics are highly doubtful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.