Strong's #186: aklines (pronounced ak-lee-nace')
from 1 (as a negative particle) and 2827; not leaning, i.e. (figuratively) firm:--without wavering.
Thayer's Greek Lexicon:
̓́
aklinēs
1) not inclining, firm, unmoved
Part of Speech: adjective
Relation: from G1 (as a negative particle) and G2827
Usage:
This word is used 1 times:
Hebrews 10:23: "the profession of our faith without wavering; (for he is faithful that promised;)"