form the foundation or basis for

underpin

verb|/ˌʌn.dɚˈpɪn/

To support, justify, or form the basis for something

Examples

In a meeting

Strong research underpins all of our strategic recommendations.

Over coffee

Trust and communication underpin any healthy relationship.

Why this word

support

underpin implies forming the essential foundation or basis for something, while support is general assistance or backing

strengthen

underpin focuses on providing fundamental structural support, while strengthen means making more powerful generally

justify

underpin emphasizes providing foundational support or evidence, while justify means proving something right or reasonable

Usage tip

Use when describing the fundamental support or basis that makes something possible or valid

Etymology

English 'under' + 'pin,' literally to support from beneath

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