G0411
ἀνεκδιήγητος
indescribable
ἀν-εκδιήγητος, -ον (ἀ-, ἐκδιηγέομαι) inexpressible: 2Co.9:15 (MM, VGT, see word).† (AS)
Full Thayer's lexicon entry
ἀνεκδιήγητος — anekdiḗgētos
ἀνεκδιήγητος, ἀνεκδιηγητον (alpha privative and ἐκδιηγέομαι, which see), unspeakable, indescribable: 2Co 9:15 δωρεά, to describe and commemorate which words fail. (Only in ecclesiastical writings. (Clement of Rome, 1 Cor. 20, 5 [ET]; 49, 4 [ET]; Athenagoras, Theophilus of Antioch, others).)
1 occurrence