underpinning

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

Grundlage, 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.
Die Hauptgrundlage der Theorie basiert auf umfangreicher Forschung.
Strong ethical principles form the underpinning of their business.
Starke ethische Prinzipien bilden die Grundlage ihres Geschäfts.