Strong's G679 · Greek

ἄπταιστος

aptaistos · ap-tah'-ee-stos

from 1 (as a negative particle) and a derivative of 4417; not stumbling, i.e. (figuratively) without sin

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 ** ἄ-πταιστος , -ον ( πταίω ), [in LXX: III Mac 6:39 *;] without stumbling , sure-footed : metaph. (MM, s.v.), Ju 24 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain