Doubtfully and For certain

Opposite meaning terms

Doubtfully adverb - With distrust.

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For certain is an antonym for doubtfully.

For certain adverb - Definitely or positively (`sure' is sometimes used informally for `surely').

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Doubtfully is an antonym for for certain in topics: accurately, without doubt.

Cite this Source

For certain and Doubtfully. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/doubtfully/for_certain

Doubtfully & For certain. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/doubtfully/for_certain>.

For certain or Doubtfully. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/doubtfully/for_certain.

Google Ngram Viewer shows how "doubtfully" and "for certain" have occurred on timeline