WordNet (r) 3.0 (2006):

set back
    v 1: hold back to a later time; "let's postpone the exam" [syn:
         postpone, prorogue, hold over, put over, table,
         shelve, set back, defer, remit, put off]
    2: slow down the progress of; hinder; "His late start set him
       back"
    3: cost a certain amount; "My daughter's wedding set me back
       $20,000" [syn: set back, knock back, put back]

Moby Thesaurus II by Grady Ward, 1.0:

109 Moby Thesaurus words for "set back":
   arrest, backpedal, backwater, bog down, bottle up, brake, bridle,
   check, clip the wings, constrain, contain, control, cool, cool off,
   countercheck, curb, curtail, dam up, damp, dampen, decelerate,
   delay, dent, depress, detain, dimple, dint, dompt, draw rein,
   ease off, ease up, engrave, enjoin, govern, guard, hang up, hinder,
   hold, hold at bay, hold back, hold fast, hold in, hold in check,
   hold in leash, hold up, impede, impress, imprint, indent, inhibit,
   intercept, interfere, intermeddle, interrupt, intervene, keep,
   keep back, keep from, keep in, keep in check, keep under control,
   lay under restraint, let down, let up, lose ground, lose momentum,
   lose speed, meddle, mire, moderate, notch, obstruct, oppose, pit,
   pock, pockmark, press in, prohibit, pull, pull in, punch, punch in,
   recess, reef, rein, rein in, relax, repress, resist, restrain,
   retard, retrench, scotch, set in, slack off, slack up, slacken,
   slow, slow down, slow up, snub, stamp, stay, straiten, suppress,
   take in sail, tamp, throttle down, withhold