Take a look at this thesaurus entry.doubt (n.)Definition: the feeling of uncertainty or disbeliefSynonyms: distrust, misgiving, suspicionAntonyms: belief, confidence, trustBased on the thesaurus entry, which word is also a synonym for the word “doubt”?

A synonym has a similar meaning. To question something can mean to doubt or feel uncertain about it, so “question” is the best match. “Faith” and “certainty” are closer to the antonyms belief and confidence, while “value” is unrelated.

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