To bear the weight of, especially from below; keep from falling, sinking, or slipping:
To dig in the ground, as with the snout
To base; ground
To base or establish (a statement or action, for example):
(Electricity) To connect (an electric circuit) to a ground.
To lay the base of; set for support; base
To establish is defined as to start, create or bring about something.
To establish a basis for; found or ground:
To base is defined as to make a determination, to create groundwork or to place something somewhere.
Find another word for underpins. In this page you can discover 10 synonyms, antonyms, idiomatic expressions, and related words for underpins, like: supports, corroborates, roots, rests, predicates, grounds, founds, establishes, builds and bases.