πταῖσμα, ατος, τό,
(πταίω) stumble, trip, false step, mistake, [[ 6th c.BC: Theognis Elegiacus 1222 (_plural_) ] Refs 6th c.BC+]; of a horse, [[ 1st-2nd c.AD: Plutarchus Biographus et Philosophus 2.549c, etc.; in writing, 3rd c.AD: Longinus Rhetor 33.4 (_plural_). ] Refs 1st c.AD+]
__2 error, fault, [[ 1st c.AD: Josephus Historicus “Antiquitates Judaicae” 7.7.1 ] Refs 1st c.AD+]; τῆς ἀνοσιουργίας ἀσεβῆ π. [[ 4th c.AD: Iamblichus Philosophus “de Mysteriis” 3.31. ] Refs 4th c.AD+]
__II failure, misfortune, euphemistic for defeat, ἢν σφέας καταλάβῃ π. πρὸς τὸν Πέρσην [[ 5th c.BC: Herodotus Historicus 7.149 ] Refs 5th c.BC+]; συμβαίνει π. [τινί] [[ 4th c.BC: Demosthenes Orator 10.13, compare 4th c.BC: Aeschines Orator 3.164 ] Refs 4th c.BC+]; ἄν τι γένηται π. [[ 4th c.BC: Demosthenes Orator “Epistulae” 3.18 ] Refs 4th c.BC+]; τὸ τῆς τύχης π. [[ 1st c.BC: Philodemus Philosophus “περὶ κακιῶν ί” p.22J.; περὶ τὴν ναυμαχίαν 1st c.BC: Diodorus Siculus Historicus 11.15. ] Refs 1st c.BC+]