Inexcusable

From BiblePortal Wikipedia

King James Dictionary [1]

Inexcu'Sable, a. s as z. L. inexcusabilis in and excusabilis, excuso. See Excuse. Not to be excused or justified as inexcusable folly.

Webster's Dictionary [2]

(a.) Not excusable; not admitting excuse or justification; as, inexcusable folly.

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