One entry found for doubtful.
Main Entry: doubt·ful
Pronunciation: dat-fl
Function: adjective 1: not clear or certain as to fact <a doubtful claim> 2: QUESTIONABLE 2 <doubtful intentions> 3: undecided in opinion 4: not certain in outcome - doubt·ful·ly /-f-l/ adverb - doubt·ful·nessnoun