Abbott-Smith Manual Greek Lexicon
ἀν-εκ-λάλητος (G412)
1 *† ἀν-εκ-λάλητος , -ον ( ἀ- , ἐκλαλέω ), unspeakable : I Pe 1:8 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G412 · Greek
ἀνεκλάλητος
aneklaletos · an-ek-lal'-ay-tos
from 1 (as a negative particle) and a presumed derivative of 1583; not spoken out, i.e. (by implication) unutterable