The Collaborative International Dictionary
Unappealable \Un`ap*peal"a*ble\, a.
Not appealable; that can not be carried to a higher tribunal by appeal; as, an unappealable suit or action.
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Not to be appealed from; -- said of a judge or a judgment that can not be overruled.
The infallible, unappealable Judge [God].
--South.We submitted to a galling yet unappealable necessity.
--Shelley. [1913 Webster] -- Un`ap*peal"a*bly, adv.
WordNet
adj. not subject to appeal; "the judge's ruling was handed down in a preliminary hearing rather than a trial and was therefore unappealable" [ant: appealable]
Usage examples of "unappealable".
His final argument was that Deiaura had not confined himself to facing the demons with the unappealable authority of Christ, but had committed the impertinence of discussing matters of faith with them.
Jessie couldn't remember Daddy ever making this gesture to her, and it reinforced her feeling that something had gone horribly awry here, and that there were apt to be fundamental, unappealable changes as the result of some terrible error (probably agreeing to wear the sundress) she had made.