WordNet (r) 3.0 (2006):

lay down
    v 1: institute, enact, or establish; "make laws" [syn: lay
         down, establish, make]

Moby Thesaurus II by Grady Ward, 1.0:

164 Moby Thesaurus words for "lay down":
   abdicate, abjure, acknowledge defeat, advance, affirm, align,
   allege, announce, annunciate, ante, ante up, appoint, argue,
   arrange in layers, assert, assever, asseverate, authorize, aver,
   avouch, avow, back, bank, bet, bet on, bundle away, cache, call,
   cant, careen, cease, cede, coffer, contend, cover, cry quits,
   declare, delaminate, demand, deposit, desist from, desquamate,
   dictate, drop, enunciate, equalize, even, exfoliate, express, fade,
   fell, file, flake, flatten, flush, forgo, forswear, gamble,
   give over, give up, grade, hand over, have, have done with, hazard,
   heel, hold, hutch, impose, insist, issue a manifesto, laminate,
   lay, lay a wager, lay away, lay flat, lay in, lay in store,
   lay level, lay low, lay out, lay up, layer, leave off, level,
   lie along, list, lodge, maintain, make a bet, make obligatory,
   manifesto, meet a bet, pack away, parlay, pass, pay over,
   play against, plunge, pose, posit, postulate, predicate, prescribe,
   proclaim, profess, pronounce, propose, propound, protest, punt,
   put, put away, put down, put it, put up, rase, raze, relinquish,
   renounce, repose, reposit, require, reservoir, resign, rest, roll,
   roll flat, salt away, salt down, say, scale, see, set, set down,
   set forth, smooth, smooth out, smoothen, speak, speak out,
   speak up, stake, stand for, stand on, stand pat, stash, state,
   steamroll, steamroller, store, store away, stow, stow away,
   stow down, stratify, submit, surrender, throw up, tip, wager,
   waive, warehouse, yield