What is another word for under-pins?
Pronunciation: [ˌʌndəpˈɪnz] (IPA) 
Under-pins is a term that refers to the fundamental support or basis of something. Synonyms for under-pins include foundation, base, cornerstone, pillar, bedrock, footing, ground, support, root, and backbone. These terms all suggest a solid and fundamental support that holds something in place, whether it be a physical object like a building or a concept like an idea or belief. While the synonym chosen may depend on the context or tone of the writing, each of these terms can effectively convey the idea of under-pins in a variety of situations.
