WordNet (r) 3.0 (2006):

hold over
    v 1: intimidate somebody (with a threat); "She was holding it
         over him"
    2: hold over goods to be sold for the next season [syn: carry
       over, hold over]
    3: keep in a position or state from an earlier period of time
    4: continue a term of office past the normal period of time
    5: 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]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "hold over":
   adjourn, continue, defer, delay, drag out, extend, hang fire,
   hang up, hold off, hold up, lay aside, lay by, lay over,
   pigeonhole, postpone, prolong, prorogate, prorogue, protract,
   push aside, put aside, put off, put on ice, recess, reserve,
   set aside, set by, shelve, shift off, sleep on, stand over,
   stave off, stay, stretch out, suspend, table, take a recess,
   waive