New Living Translation
Instruct the wise, and they will be even wiser. Teach the righteous, and they will learn even more.

American Standard Version
Give instruction to a wise man, and he will be yet wiser: Teach a righteous man, and he will increase in learning.

Berean Study Bible
Instruct a wise man, and he will be wiser still; teach a righteous man, and he will increase his learning.

Douay-Rheims Bible
Give an occasion to a wise man, and wisdom shall be added to him. Teach a just man, and he shall make haste to receive it.

English Revised Version
Give instruction to a wise man, and he will be yet wiser: teach a righteous man, and he will increase in learning.

King James Bible
Give instruction to a wise man, and he will be yet wiser: teach a just man, and he will increase in learning.

World English Bible
Instruct a wise man, and he will be still wiser. Teach a righteous man, and he will increase in learning.

Young's Literal Translation
Give to the wise, and he is wiser still, Make known to the righteous, And he increaseth learning.

Proverbs 9:9 Additional Translations ...