What are the opposite words for unquestionable?

Unquestionable is a word used to describe something that is beyond doubt or challenge. Opposites or antonyms for unquestionable include words such as dubious, questionable, arguable, debatable, and uncertain. These words suggest a lack of confidence or certainty in the validity of a claim or statement. For example, if one says that the Earth is round, it is unquestionable that they are correct. However, if one says that climate change is not real, the statement is dubious and can be questioned. In conclusion, antonyms for the word unquestionable convey uncertainty, doubt or skepticism in the validity of a statement or claim.

Antonym of the day

getting way
approve, begin, go.