underpinning

US /ˈʌn.dɚˌpɪn.ɪŋ/
UK /ˈʌn.dɚˌpɪn.ɪŋ/
"underpinning" picture
1.

onderbouwing, fundament, basis

a set of ideas, figures, or structures that provides a base or foundation for something

:
The theory's main underpinning is based on extensive research.
De belangrijkste onderbouwing van de theorie is gebaseerd op uitgebreid onderzoek.
Strong ethical principles form the underpinning of their business.
Sterke ethische principes vormen de onderbouwing van hun bedrijf.