c. 1400, reprobacioun, "rejection," from Church Latin reprobationem (nominative reprobatio) "rejection, reprobation," noun of action from past-participle stem of reprobare "disapprove, reject, condemn" (see reprobate (adj.)).
In theology, "the state of being consigned to eternal punishment" (1530s). From 1580s as "condemnation as worthless or spurious;" the broad sense of "condemnation, censure, act of vehemently disapproving" is from 1727. Other nouns that have been used in English include reprobacy (1590s), reprobance (c. 1600), reprobature (1680s, legal).