Be valid
Underpin
Underpin verb - To hold up or serve as a foundation for.
Be valid and underpin are semantically related. Sometimes you can use "Be valid" instead a verb "Underpin".
Nearby Word: underpinning
Mutual synonyms
Cite this Source
Underpin and Be valid. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/be_valid/underpin
Be valid & Underpin. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/be_valid/underpin>.
Underpin or Be valid. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/be_valid/underpin.
Google Ngram Viewer shows how "be valid" and "underpin" have occurred on timeline