New Living Translation
It’s poor judgment to guarantee another person’s debt or put up security for a friend.

American Standard Version
A man void of understanding striketh hands, And becometh surety in the presence of his neighbor.

Berean Study Bible
A man lacking judgment strikes hands in pledge and puts up security for his neighbor.

Douay-Rheims Bible
A foolish man will clap hands, when he is surety for his friend.

English Revised Version
A man void of understanding striketh hands, and becometh surety in the presence of his neighbour.

King James Bible
A man void of understanding striketh hands, and becometh surety in the presence of his friend.

World English Bible
A man void of understanding strikes hands, and becomes collateral in the presence of his neighbor.

Young's Literal Translation
A man lacking heart is striking hands, A surety he becometh before his friend.

Proverbs 17:18 Additional Translations ...