underpin Meaning, Definition & Usage

  1. verb support from beneath
  2. verb support with evidence or authority or make more certain or confirm
    corroborate; support; bear out.
    • The stories and claims were born out by the evidence

WordNet

Un`der*pin" transitive verb
Wordforms
imperfect & past participle Underpinned ; present participle & verbal noun Underpinning
Definitions
  1. To lay stones, masonry, etc., under, as the sills of a building, on which it is to rest.
  2. To support by some solid foundation; to place something underneath for support.

Webster 1913