underpin
//ˌʌndəˈpɪn//
Verb
underpinInfinitive
underpinPresent tense
underpinnedPast tense
underpinnedPast participle
underpinningPresent participle
underpinsThird-person singular
1
To support, justify, or form the basis of something.
Strong evidence underpins this scientific theory.
2
To strengthen or support a building or structure from below, typically by laying a solid foundation beneath it.
The engineers underpinned the old building with concrete to prevent it from collapsing.