WordNet (r) 3.0 (2006):

fork out
    v 1: to surrender someone or something to another; "the guard
         delivered the criminal to the police"; "render up the
         prisoners"; "render the town to the enemy"; "fork over the
         money" [syn: hand over, fork over, fork out, fork
         up, turn in, deliver, render]

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "fork out":
   accord, administer, afford, allot, allow, award, bestow, bestow on,
   budget, communicate, confer, cost, cost out, deal, deal out,
   disburse, dish out, dispense, dole, dole out, donate, expend,
   extend, gift, gift with, give, give freely, give out, go through,
   grant, hand out, heap, help to, impart, incur costs, invest, issue,
   lavish, lay out, let have, mete, mete out, offer, open the purse,
   outlay, pay, pay out, pour, present, proffer, put out, rain,
   render, run through, schedule, serve, shell out, shower,
   sink money in, slip, snow, spend, splurge, squander, tender,
   throw money around, vouchsafe, yield