Strong's Concordance

Original word: ἀλάλητος
Transliteration: alalétos
Definition (short): deep
Definition (full): inexpressible

NAS Exhaustive Concordance

Word Origin: from alpha (as a neg. prefix) and laleó
Definition: inexpressible
NASB Translation: too deep (1), too deep for words (1).
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Strong's Exhaustive Concordance

From a (as a negative particle) and a derivative of laleo; unspeakable -- unutterable, which cannot be uttered.

see GREEK a

see GREEK laleo

KJV: Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.
NASB: In the same way the Spirit also helps our weakness; for we do not know how to pray as we should, but the Spirit Himself intercedes for us with groanings too deep for words;