unquestionable in a quote

"I know of no more encouraging fact than the unquestionable ability of man to elevate his life by conscious endeavor."

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  • Definition for "unquestionable"
    • Beyond concern or doubt. See Synonyms at authentic.
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  • Sentence for "unquestionable"
    • The Muslim prayer reminded me of…
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  • Synonym for "unquestionable"
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