The Collaborative International Dictionary of English v.0.48:

Naught \Naught\ (n[add]t), n. [OE. naught, nought, naht, nawiht,
   AS. n[=a]wiht, n[=a]uht, n[=a]ht; ne not + [=a] ever + wiht
   thing, whit; hence, not ever a whit. See No, adv. Whit,
   and cf. Aught, Not.]
   1. Nothing. [Written also nought.]
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            Doth Job fear God for naught?         --Job i. 9.
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   2. The arithmetical character 0; a cipher. See Cipher.
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   To set at naught, to treat as of no account; to disregard;
      to despise; to defy; to treat with ignominy. "Ye have set
      at naught all my counsel." --Prov. i. 25.
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The Collaborative International Dictionary of English v.0.48:

Naught \Naught\, adv.
   In no degree; not at all. --Chaucer.
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         To wealth or sovereign power he naught applied.
                                                  --Fairfax.
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The Collaborative International Dictionary of English v.0.48:

Naught \Naught\, a.
   1. Of no value or account; worthless; bad; useless.
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            It is naught, it is naught, saith the buyer. --Prov.
                                                  xx. 14.
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            Go, get you to your house; begone, away!
            All will be naught else.              --Shak.
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            Things naught and things indifferent. --Hooker.
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   2. Hence, vile; base; naughty. [Obs.]
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            No man can be stark naught at once.   --Fuller.
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WordNet (r) 3.0 (2006):

naught
    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]
    2: complete failure; "all my efforts led to naught"

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "naught":
   a little thing, aught, cipher, collapse, destruction, disaster,
   failure, goose egg, hardly anything, inessential, insignificancy,
   marginal matter, matter of indifference, mere nothing,
   minor matter, nada, nichts, nihil, nihility, nil, nix,
   no great matter, no such thing, nothing, nothing at all,
   nothing in particular, nothing on earth, nothing to signify,
   nothing whatever, nought, nullity, ought, paltry affair,
   peu de chose, rien du tout, ruin, scarcely anything, technicality,
   thing of naught, wind, zero, zilch