Extended Strong's Greek Lexicon (Abbott-Smith based)
reckless
Usage: προπετής, -ές (προπίπτω), [in LXX: Pro.10:14 (אֱוִיל) Pro.13:3 (פָּשַׂק) Sir.9:18 * ;] falling forwards, headlong. Metaphorical, precipitate, rash, reckless: of persons, 2Ti.3:4; of things, Act.19:36.† (AS)