Nix

nix
    n 1: a quantity of no importance; "it looked like nothing I had
         ever seen before"; "reduced to nil all the work we had
         done"; "we racked up a pathetic goose egg"; "it was all for
         naught"; "I didn't hear zilch about it" [syn: {nothing},
         {nil}, {nix}, {nada}, {null}, {aught}, {cipher}, {cypher},
         {goose egg}, {naught}, {zero}, {zilch}, {zip}, {zippo}]
    v 1: command against; "I forbid you to call me late at night";
         "Mother vetoed the trip to the chocolate store"; "Dad nixed
         our plans" [syn: {forbid}, {prohibit}, {interdict},
         {proscribe}, {veto}, {disallow}, {nix}] [ant: {allow},
         {countenance}, {let}, {permit}]
    

Nix \Nix\, n.; fem. {Nixe}. [G. Cf. 1st {Nick}.] (Teut. Myth.)
   One of a class of water spirits, commonly described as of a
   mischievous disposition.
   [1913 Webster]

         The treacherous nixes who entice men to a watery death.
                                                  --Tylor.
   [1913 Webster]
    

92 Moby Thesaurus words for "nix":
      Davy, Davy Jones, Neptune, Nereid, Oceanid, Oceanus, Poseidon,
      Thetis, Triton, abnegation, aught, cipher, contradiction,
      declension, declination, declinature, declining, denial,
      deprivation, disagreement, disallowance, disclaimer, disclamation,
      disobedience, dissent, fat chance, forget it, fresh-water nymph,
      goose egg, holding back, kelpie, kill, limniad, man fish, mermaid,
      merman, nada, naiad, naught, nay, naysaying, negation, negative,
      negative answer, negative attitude, negativeness, negativism,
      negativity, nichts, nihil, nil, nit, nixie, no, no sirree,
      no such thing, no way, nonacceptance, noncompliance, nonconsent,
      nonobservance, nope, not a chance, not much, nothing,
      nothing at all, nothing doing, nothing on earth, nothing whatever,
      ocean nymph, recantation, refusal, rejection, repudiation,
      retention, sea nymph, sea-maid, sea-maiden, siren, thing of naught,
      thumbs-down, turndown, under no circumstances, undine,
      unwillingness, water god, water spirit, water sprite, wind,
      withholding, zero, zilch