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underpin

1 ENTRIES FOUND:
underpin /ˌʌndɚˈpɪn/ verb
underpins; underpinned; underpinning
underpin
/ˌʌndɚˈpɪn/
verb
underpins; underpinned; underpinning
Britannica Dictionary definition of UNDERPIN
[+ object]
: to strengthen or support (something) from below usually used figuratively

— underpinning

/ˈʌndɚˌpɪnɪŋ/ noun, plural underpinnings [count, noncount]