smooth as butter

English

Etymology

Possibly from Psalm 55:21 in the Bible: "His talk is smooth as butter [...]"

Adjective

smooth as butter (not comparable)

1. Extremely smooth.
   • 2011, Biblica, Holy Bible: New International Version, Grand Rapids, Mich.: Zondervan, →ISBN, Psalms 55:21:

     "His talk is smooth as butter [...]

Adverb

smooth as butter (not comparable)

1. Extremely smooth.

See also

• smooth as oil
• smooth as silk