[f. prec. + -NESS.] The state of being questionable; doubtfulness, etc.

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1668.  H. More, Div. Dial., II. xxii. (1713), 158, marg. From the Questionableness whether … there does not as much good redound to the Universe.

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1857.  De Quincey, Keats, Wks. 1862, V. 270. The questionableness of its particular statements.

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1867.  C. J. Smith, Syn. & Antonyms, s.v. Apparent, The adverb apparently admits the sense of questionableness still more strongly.

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