Definition of undergird

Definition of undergird
  1. undergird Verb To strengthen, secure, or reinforce by passing a rope, cable, or chain around the underside of an object.
  2. undergird Verb To give fundamental support; provide with a sound or secure basis; provide supportive evidence for.
  3. undergird Verb To lend moral support to.
  4. undergird Verb To secure below or underneath.
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