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]