Noah Webster's Dictionary 1. (adv.) Lacking thought; careless; inconsiderate; rash; as, a thoughtless person, or act. 2. (adv.) Giddy; gay; dissipated. 3. (adv.) Deficient in reasoning power; stupid; dull.

Multi-Version Concordance Thoughtless (17 Occurrences) Romans 1:14 Both to Greeks and to foreigners, both to wise and to thoughtless, I am a debtor, (YLT) Galatians 3:1 O thoughtless Galatians, who did bewitch you, not to obey the truth -- before whose eyes Jesus Christ was described before among you crucified? (YLT) Galatians 3:3 so thoughtless are ye! having begun in the Spirit, now in the flesh do ye end? (YLT) Numbers 30:6 And if she is married to a husband at the time when she is under an oath or an undertaking given without thought; (See RSV) Numbers 30:8 But if her husband, hearing of it, makes her take it back, then the oath she made and the undertaking she gave without thought will have no force or effect, and she will have the Lord's forgiveness. (See RSV) Proverbs 1:22 How long, ye simple ones, will ye love simplicity? And scoffers delight them in scoffing, And fools hate knowledge? (See JPS) Proverbs 1:32 For the backsliding of the simple shall slay them, And the careless ease of fools shall destroy them. (See JPS) Proverbs 7:7 And I beheld among the simple ones, I discerned among the youths, A young man void of understanding, (See JPS) Proverbs 8:5 O ye simple, understand prudence; And, ye fools, be of an understanding heart. (See JPS) Proverbs 9:4 Whoso is simple, let him turn in hither: As for him that is void of understanding, she saith to him, (See JPS) Proverbs 9:13 The foolish woman is clamorous;'she is'simple, and knoweth nothing. (See JPS) Proverbs 9:16 Whoso is simple, let him turn in hither; And as for him that is void of understanding, she saith to him, (See JPS) Proverbs 14:15 The simple believeth every word; But the prudent man looketh well to his going. (See JPS) Proverbs 14:18 The simple inherit folly; But the prudent are crowned with knowledge. (See JPS) Proverbs 21:11 When the scoffer is punished, the simple is made wise; And when the wise is instructed, he receiveth knowledge. (See JPS) Proverbs 22:3 A prudent man seeth the evil, and hideth himself; But the simple pass on, and suffer for it. (See JPS) Proverbs 27:12 A prudent man seeth the evil, and hideth himself; But the simple pass on, and'suffer for it. (See JPS)