build on

build on idiom
Also, build upon. Add as an extension; use as a basis or foundation. For example, They decided to build on an addition, or She was building all her hopes on passing the exam. John Locke had this idiom in his treatise on government (1689): “Sovereignty built on ‘property’ . . . comes to nothing.” [Late 1600s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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