King James Bible Dictionary

RASH, adjective

1. Hasty in council or action; precipitate; resolving or entering on a project or measure without due deliberation and caution, and thus encountering unnecessary hazard; applied to persons; as a rash statesman or minister; a rash commander.

2. Uttered or undertaken with too much haste or too little reflection; as rash words; rash measures.

3. Requiring haste; urgent.

I have scarce leisure to salute you, my matter is so rash

4. Quick; sudden; as rash gunpowder. [Not in use.]

RASH, noun Corn so dry as to fall out with handling. [Local.]

RASH, noun

1. Satin.

2. An eruption or efflorescence on the body.

RASH, verb transitive To slice; to cut into pieces; to divide.

RASH'ER, noun A thin slice of bacon; a thin cut.

RASH'LY, adverb With precipitation; hastily; without due deliberation.

He that doth any thing rashly must do it willingly.

So rashly brave, to dare the sword of Theseus.

General references
Psalms 116:11; Proverbs 14:29; Proverbs 19:2; Proverbs 21:5; Proverbs 25:8; Proverbs 29:20; Ecclesiastes 5:2; Ecclesiastes 7:9

Instances of rashness:

Moses:

In slaying the Egyptian
Exodus 2:11-12; Acts 7:24-25

When he smote the rock
Numbers 20:10-12

Jephtha's vow
Judges 11:31-39

Israel's vow to destroy the Benjamites
Jude 21:1-23

Uzzah, in steadying the ark
2 Samuel 6:6-7

David, in his generosity to Ziba
2 Samuel 16:4; 2 Samuel 19:26-29

Rehoboam, in forsaking the counsel of the old men
1 Kings 12:8-15

Josiah, in fighting against Necho
2 Chronicles 35:20-24

Naaman, in refusing to wash in Jordan
2 Kings 5:11-12

James and John, in desiring to call down fire on the Samaritans
Luke 9:54

Paul, in persisting in going to Jerusalem, against the repeated admonitions of the Holy Ghost
Acts 21:4; Acts 21:10-15

The centurion, in rejecting Paul's counsel
Acts 27:11

RASH'NESS, noun

1. To much haste in resolving or in undertaking a measure; precipitation; inconsiderate readiness or promptness to decide or act, implying disregard of consequences or contempt of danger; applied to persons. The failure of enterprises is often owing to rashness

We offend by rashness which is an affirming or denying before we have sufficiently informed ourselves.

2. The quality of being uttered or done without due deliberation; as the rashness of words or of undertakings.