The Collaborative International Dictionary of English v.0.48:

Dare \Dare\ (d[^a]r), v. i. [imp. Durst (d[^u]rst) or Dared
   (d[^a]rd); p. p. Dared; p. pr. & vb. n. Daring.] [OE. I
   dar, dear, I dare, imp. dorste, durste, AS. ic dear I dare,
   imp. dorste. inf. durran; akin to OS. gidar, gidorsta,
   gidurran, OHG. tar, torsta, turran, Goth. gadar,
   gada['u]rsta, Gr. tharsei^n, tharrei^n, to be bold, tharsy`s
   bold, Skr. Dhrsh to be bold. [root]70.]
   To have adequate or sufficient courage for any purpose; to be
   bold or venturesome; not to be afraid; to venture.
   [1913 Webster]

         I dare do all that may become a man; Who dares do more
         is none.                                 --Shak.
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         Why then did not the ministers use their new law?
         Bacause they durst not, because they could not.
                                                  --Macaulay.
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         Who dared to sully her sweet love with suspicion.
                                                  --Thackeray.
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         The tie of party was stronger than the tie of blood,
         because a partisan was more ready to dare without
         asking why.                              --Jowett
                                                  (Thu?yd.).
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   Note: The present tense, I dare, is really an old past tense,
         so that the third person is he dare, but the form he
         dares is now often used, and will probably displace the
         obsolescent he dare, through grammatically as incorrect
         as he shalls or he cans. --Skeat.
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               The pore dar plede (the poor man dare plead).
                                                  --P. Plowman.
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               You know one dare not discover you. --Dryden.
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               The fellow dares not deceive me.   --Shak.
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               Here boldly spread thy hands, no venom'd weed
               Dares blister them, no slimy snail dare creep.
                                                  --Beau. & Fl.
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   Note: Formerly durst was also used as the present. Sometimes
         the old form dare is found for durst or dared.
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The Collaborative International Dictionary of English v.0.48:

Dare \Dare\, v. t. [imp. & p. p. Dared; p. pr. & vb. n.
   Daring.]
   1. To have courage for; to attempt courageously; to venture
      to do or to undertake.
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            What high concentration of steady feeling makes men
            dare every thing and do anything?     --Bagehot.
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            To wrest it from barbarism, to dare its solitudes.
                                                  --The Century.
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   2. To challenge; to provoke; to defy.
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            Time, I dare thee to discover
            Such a youth and such a lover.        --Dryden.
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The Collaborative International Dictionary of English v.0.48:

Daring \Dar"ing\, a.
   Bold; fearless; adventurous; as, daring spirits. --
   Dar"ing*ly, adv. -- Dar"ing*ness, n.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Daring \Dar"ing\, n.
   Boldness; fearlessness; adventurousness; also, a daring act.
   [1913 Webster]

WordNet (r) 3.0 (2006):

daring
    adj 1: disposed to venture or take risks; "audacious visions of
           the total conquest of space"; "an audacious
           interpretation of two Jacobean dramas"; "the most daring
           of contemporary fiction writers"; "a venturesome
           investor"; "a venturous spirit" [syn: audacious,
           daring, venturesome, venturous]
    2: radically new or original; "an avant-garde theater piece"
       [syn: avant-garde, daring]
    n 1: a challenge to do something dangerous or foolhardy; "he
         could never refuse a dare" [syn: dare, daring]
    2: the trait of being willing to undertake things that involve
       risk or danger; "the proposal required great boldness"; "the
       plan required great hardiness of heart" [syn: boldness,
       daring, hardiness, hardihood] [ant: timidity,
       timorousness]

Moby Thesaurus II by Grady Ward, 1.0:

168 Moby Thesaurus words for "daring":
   adventuresome, adventuresomeness, adventurous, adventurousness,
   arrogance, arrogant, audacious, audaciousness, audacity, balls,
   blazon, bold, bold front, boldness, bottle, brash, brash bearing,
   brashness, brassiness, brassy, bravado, brave, bravery, bravura,
   braw, brazen, brazenness, brilliancy, brinkmanship, bumptious,
   bumptiousness, challenging, cheekiness, cheeky, chichi, cockiness,
   cocky, contempt, contemptuous, contemptuousness, courage,
   courage fou, courageous, courting disaster, daredevil, daredevilry,
   daredeviltry, daringness, dash, dashing, death-defying, defial,
   defiance, defiant, defying, demonstration, derision, derisive,
   derring-do, despite, disdain, disdainful, display, disregard,
   disregardful, dramatics, dressy, eclat, enterprise, enterprising,
   etalage, exhibition, exhibitionism, exhibitionistic, false front,
   fanfaronade, fearless, fearlessness, figure, fire-eating, flair,
   flashing, flashy, flaunt, flaunting, flirting with death, flourish,
   foolhardiness, foolhardy, forward, forwardness, frilly, frothy,
   gallant, gay, glittering, going for broke, greatly daring, grit,
   guts, gutsy, hardy, harebrained, harebrainedness, histrionics,
   impertinence, impertinent, impudence, impudent, insolence,
   insolent, intrepid, intrepidity, jaunty, jazzy, madbrain,
   madbrained, madcap, manifestation, mettle, mettlesome, nerve,
   nervy, overbold, overboldness, pageant, pageantry, parade, pert,
   pertness, playing with fire, pluck, plucky, presumption,
   presumptuous, presumptuousness, rakish, rash, reckless,
   regardless of consequences, sauciness, saucy, sham, show,
   showing-off, showy, snazzy, spectacle, spirit, splash, splashy,
   splurge, splurgy, sporty, spunk, staginess, temerarious, theatrics,
   unafraid, valor, valorous, vaunt, venturesome, venturesomeness,
   venturous, venturousness, wild, wild-ass



The Devil's Dictionary (1881-1906):

DARING, n.  One of the most conspicuous qualities of a man in
security.