King James Bible
Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.

New King James Version
Let your speech always be with grace, seasoned with salt, that you may know how you ought to answer each one.

American Standard Version
Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.

Berean Study Bible
Let your speech always be gracious, seasoned with salt, so that you may know how to answer everyone.

Douay-Rheims Bible
Let your speech be always in grace seasoned with salt: that you may know how you ought to answer every man.

English Revised Version
Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.

World English Bible
Let your speech always be with grace, seasoned with salt, that you may know how you ought to answer each one.

Young's Literal Translation
your word always in grace -- with salt being seasoned -- to know how it behoveth you to answer each one.

Colossians 4:6 Additional Translations ...