Strong's Concordance

Original word: ἀκλινής
Transliteration: aklinés
Definition (short): wavering
Definition (full): unbending

NAS Exhaustive Concordance

Word Origin: from alpha (as a neg. prefix) and klinó
Definition: unbending
NASB Translation: without wavering (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
Copyright © 1981, 1998 by The Lockman Foundation.
All rights reserved Lockman.org

Strong's Exhaustive Concordance

From a (as a negative particle) and klino; not leaning, i.e. (figuratively) firm -- without wavering.

see GREEK a

see GREEK klino

KJV: Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)
NASB: Let us hold fast the confession of our hope without wavering, for He who promised is faithful;