a. nonce-wd. [f. FLINT sb. + -FUL.] = FLINTY a.

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1576.  R. L[inche], Diella (1877), 65.

        Thinking indeede; shee by his absence might
  at length intenerate her flintfull hart,
And metamorphize her conceauèd spight
  into true loue regardaunt of his smarst.

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