spoil (by any process) or (generally) to ruin

(on the varied usage and distinctive meaning of the word, v. Mayor on II Pe, , 175 ff.): c. acc., , ; seq. , ; , , , ; , (cf. , ).† to destroy, corrupt, spoil App. I Co 3:17 15:23 II Co 7:2 II Co 11:3 II Pe 2:12 Ju 10 Re 19:2 Eph 4:22 ἀπό ἐν κατά δια- κατα-φθείρω

properly, to shrivel or wither, i.e. to spoil (by any process) or (generally) to ruin (especially figuratively, by moral influences, to deprave)

corrupt (self), defile, destroy