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Impossible to excuse or justify; unpardonable: inexcusable behavior.

in′ex·cus′a·ble·ness n.
in′ex·cus′a·bly adv.
References in periodicals archive ?
Compare this ratio to Stoddard's later remark in The Inexcusableness of Neglecting the Worship of God Under a Pretence of being in an Unconverted Condition (Boston, 1707) that for every person that attended the Lord's Supper four did not (cited in Works of Jonathan Edwards, 12:36, n.