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Meaning of undergird

un•der•gird

Pronunciation: (un"dur-gûrd'), [key]
— -gird•ed -girt, -gird•ing.
  1. to strengthen; secure, as by passing a rope or chain under and around: to undergird a top-heavy load.
  2. to give fundamental support; provide with a sound or secure basis: ethics undergirded by faith.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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