1. to give support or strength to something from below or from the foundation
Usage: third person singular present tense of ‘undergird’
2. to form the basis or foundation for something
Usage: figurative use

Examples

• A strong work ethic undergirds his success in business.
• The steel framework undergirds the entire building structure.
• Scientific evidence undergirds the new medical treatment.
• Trust undergirds any healthy relationship.
• The concrete foundation undergirds the weight of the bridge.
• Democratic principles undergird our system of government.
• Years of training undergird her athletic performance.