underpin


un·der·pin

transitive verb \-ˈpin\

: to strengthen or support (something) from below

Full Definition of UNDERPIN

1
:  support, substantiate <underpin a thesis with evidence>
2
:  to form part of, strengthen, or replace the foundation of <underpin a structure> <underpin a sagging building>

Examples of UNDERPIN

  1. a wall underpinned by metal beams
  2. <the central beliefs that underpin a free society>

First Known Use of UNDERPIN

1522

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