Good News Translation
Don't make fun of someone who has bad manners; he may insult your ancestors.

New Revised Standard Version
Do not make fun of one who is ill-bred, or your ancestors may be insulted.

Contemporary English Version
Don't laugh at those who are crude, unless you want to hear them insult your ancestors.

New American Bible
Do not associate with the senseless, lest your ancestors be insulted.

Douay-Rheims Bible
Strive not with a man that is full of tongue, and heap not wood upon his fire.

Strive not with a man that is full of tongue, and heap not wood upon his fire.

Sirach 8:2
Contend not with a rich man, lest he bring an action against thee.

Sirach 8:3
For gold and silver hath destroyed many, and hath reached even to the heart of kings, and perverted them.

Sirach 8:5
Communicate not with an ignorant man, lest he speak ill of thy family.

Sirach 8:6
Despise not a man that turneth away from sin, nor reproach him therewith: remember that we are all worthy of reproof.