Strong's Concordance

Original word: προπετής
Transliteration: propetés
Definition (short): rash
Definition (full): falling forward, headlong

NAS Exhaustive Concordance

Word Origin: from a comp. of pro and piptó
Definition: falling forward, headlong
NASB Translation: rash (1), reckless (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From a compound of pro and pipto; falling forward, i.e. Headlong (figuratively, precipitate) -- heady, rash(-ly).

see GREEK pro

see GREEK pipto

KJV: Seeing then that these things cannot be spoken against, ye ought to be quiet, and to do nothing rashly.
NASB: "So, since these are undeniable facts, you ought to keep calm and to do nothing rash.
KJV: Traitors, heady, highminded, lovers of pleasures more than lovers of God;
NASB: treacherous, reckless, conceited, lovers of pleasure rather than lovers of God,