WordNet (r) 3.0 (2006):

turn the tables
    v 1: cause a complete reversal of the circumstances; "The tables
         are turned now that the Republicans are in power!" [syn:
         turn the tables, turn the tide]

Moby Thesaurus II by Grady Ward, 1.0:

86 Moby Thesaurus words for "turn the tables":
   accommodate, adapt, adjust, alter, ameliorate, be listened to,
   be recognized, better, break up, change, change the preponderance,
   come back at, convert, counter, deform, denature, diversify, evert,
   fit, gain a footing, gain a hearing, get back at, get cozy with,
   get in with, give and take, give in exchange, give in return,
   hit back at, improve, introvert, intussuscept, invaginate, inverse,
   invert, meliorate, mitigate, modify, modulate, move in, mutate,
   overthrow, pronate, qualify, re-create, realign, rebuild,
   reciprocate, reconstruct, redesign, refit, reform, remake, renew,
   reshape, restructure, resupinate, retaliate, retort, revamp,
   reverse, revive, revolve, ring the changes, rotate,
   shift the scene, shuffle the cards, strike back, strike root in,
   subvert, supinate, take hold, take root, transpose, turn about,
   turn around, turn down, turn in, turn inside out, turn out,
   turn over, turn the scale, turn the tide, turn upside down, vary,
   work a change, worsen