Word Summary
aptaistos: without stumbling
Original Word: ἄπταιστος
Transliteration: aptaistos
Phonetic Spelling: (ap-tah'-ee-stos)
Part of Speech: Adjective
Short Definition: without stumbling
Meaning: without stumbling
Strong's Concordance
without stumbling, without sin

From a (as a negative particle) and a derivative of ptaio; not stumbling, i.e. (figuratively) without sin -- from falling.

see GREEK a

see GREEK ptaio

Thayer's Greek Lexicon
STRONGS NT 679: ἄπταιστος

ἄπταιστος, ἀπτιαστον (πταίω, which see), not stumbling, standing firm, exempt from falling (properly, of a horse, Xenophon, de re eq. 1, 6); metaphorically: Jude 1:24. (Cf. Winers Grammar, 97 (92); Buttmann, 42 (37).)