ἄπταιστος, ον,
not stumbling, ἀπταιστστερον παρέχειν τὸν ἵππον make a horse less aptto stumble, [[ 5th-6th c.BC: Xenophon Historicus “de Equitandi ratione” 1.6: _metaphorically_, ἄ ἐν τῷ βίῳ 1st-2nd c.AD: Epictetus Philosophus “Gnomologium” 52; δώμασιν ἀ. 2nd c.BC: Limenius Lyricus 43, compare 2nd c.AD: Marcus Antoninus Imperator 5.9; βίος 2nd c.AD: Lucianus Sophista “Am.” 46] Refs 5th c.BC+]; infallible, [[ 3rd c.AD: Plotinus Philosophus 5.3.17, 3rd c.AD: Alexander Aphrodisiensis Philosophus “in Aristotelis Metaphysica commentaria - Comm. in Arist. Graeca” 713.12; ἀλήθεια 4th c.AD: Iamblichus Philosophus “de Mysteriis” 3.31; θεοὶ διδασκάλων-ότατοι 2nd c.AD: Maximus Tyrius Sophista 38.1] Refs 2nd c.AD+]. adverb -τως[[ 5th-6th c.BC: Plato Philosophus “Theaetetus” 144b] Refs 5th c.BC+]; inevitably, [[ 2nd c.AD: Galenus Medicus 14.230] Refs 2nd c.AD+]: comparative -ότερον with greater precision, [[ 2nd c.AD: Ptolemaeus Mathematicus “Tetrabiblos” 177] Refs 2nd c.AD+]:—also ἀπρο-τί, [[ 2nd c.AD: Herodianus Grammaticus “Epim.” 256. ] Refs 2nd c.AD+]
__2 intact, [[ 1st-2nd c.AD: Plutarchus Biographus et Philosophus 2.691d. ] Refs 1st c.AD+]
__II not causing to stumble, giving a good footing, λεία καὶ ἄ. ὁδός[[ 1st c.BC(?): Maximus Astrologus Tyr. 5.2.] Refs 1st c.BC+]