From a compound of pro and pipto; falling forward, i.e. Headlong (figuratively, precipitate) -- heady, rash(-ly).
see GREEK pro
see GREEK pipto
1. falling forward, headlong, sloping, precipitous: Pindar Nem. 6, 107; Xenophon, r. eq. 1, 8; others.
2. precipitate, rash, reckless: Acts 19:36; 2 Timothy 3:4 (Proverbs 10:14; Proverbs 13:3; Sir. 9:18; Clement of Rome, 1 Cor. 1, 1 [ET]; and often in Greek writings).