Choose the option opposite in meaning to the underlined word(s).
The police found a conclusive proof of the boy's guilt?
Answer Details
The opposite meaning of "conclusive" is "doubtful." The word "conclusive" in this context means that there is no doubt or uncertainty about the proof found. Therefore, the opposite meaning would be that the proof found is not reliable or convincing, which is expressed by the word "doubtful." The other options are not opposite in meaning to "conclusive" in this context.