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Webster 1913 Edition

Adj.

Not to be influenced or moved by prayers; obdurate.

[R.]

Wyclif.

unprayable ‎(comparative more unprayable, superlative most unprayable)

Incapable of being prayed.
Not to be influenced or moved by prayers; obdurate.
(Can we find and add a quotation of Wyclif to this entry?)