unspeakable

Strong’s Dictionary of Greek Words:

Number:
412 (find all occurrences in KJV Bible)
Greek:
ἀνεκλάλητος
Transliteration:
aneklaletos
Phonic:
an-ek-lal’-ay-tos
Meaning:
from 1 (as a negative particle) and a presumed derivative of 1583; not spoken out, i.e. (by implication) unutterable
KJV Usage:
unspeakable