[1] : WordNet (r) 2.0

shore up
     v : support by placing against something solid or rigid; "shore
         and buttress an old building" syn: prop up, prop, shore
see also:
prop up prop shore 

[2] : Moby Thesaurus II by Grady Ward, 1.0

68 moby thesaurus words for "shore up":
   afford support, back, back up, bear, bear out, bear up, beef up,
   bolster, bolster up, brace, brace up, buoy up, buttress, carry,
   case harden, confirm, cradle, crutch, cushion, finance, fortify,
   fund, gird, give support, harden, hold, hold up, invigorate, keep,
   keep afloat, keep up, lend support, mainstay, maintain, nerve,
   pillow, prop, prop up, refresh, reinforce, reinvigorate,
   restrengthen, rigidify, screw up, shore, shoulder, stay, steel,
   stiffen, strengthen, subsidize, subvention, subventionize, support,
   sustain, temper, tense, tighten, toughen, trice up, underbrace,
   undergird, underlie, underpin, underset, upbear, uphold, upkeep

Ball Up >> B Words
Ball Up, definition of term: Ball Up
ball+up_pag1.html

Bang Up >> B Words
Bang Up, definition of term: Bang Up
bang+up_pag1.html

Backed Up >> B Words
Backed Up, definition of term: Backed Up
backed+up_pag1.html

Back Up >> B Words
Back Up, definition of term: Back Up
back+up_pag1.html

Ante Up >> A Words
Ante Up, definition of term: Ante Up
ante+up_pag1.html

Act Up >> A Words
Act Up, definition of term: Act Up
act+up_pag1.html