Dictionary entry

ἄρρητος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

** ἄρρητος, -ον

(< ἀ- neg., ῥητός, ῥέω), [in Sm.: Le 18:23*;]

1. unspoken (Hom., al.).

2. unspeakable (Hat., al.; freq. in Inscr.; MM, s.v.): II Co 12:4.†