Doubtful and Simple

Opposite meaning words

Doubtful adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.

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Simple is an antonym for doubtful.

Simple adjective - Having no exceptions or restrictions.

Usage example: that's the simple truth

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Doubtful is an antonym for simple.

Cite this Source

Simple and Doubtful. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/doubtful/simple

Doubtful & Simple. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/doubtful/simple>.

Simple or Doubtful. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/doubtful/simple.

Google Ngram Viewer shows how "doubtful" and "simple" have occurred on timeline