irreparable
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
English > Greek (Woodhouse)
adj.
P. and V. ἀνήκεστος.
Spanish > Greek
ἀπογνώσιμος, δυσαπόληπτος, ἀνήκεστος, ἄτρεπτος, ἀναπάλλακτος, ἀνεπανόρθωτος