Doubtful and Hard-as-nails

Opposite meaning words

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

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Hard-as-nails is an antonym for doubtful.

Definitions of Doubtful not found.

Doubtful is an antonym for hard-as-nails.

Cite this Source

Hard-as-nails and Doubtful. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/doubtful/hard-as-nails

Doubtful & Hard-as-nails. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/doubtful/hard-as-nails>.

Hard-as-nails or Doubtful. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/doubtful/hard-as-nails.