fearless

from WordNet (r) 3.0 (2006)

fearless
    adj 1: oblivious of dangers or perils or calmly resolute in
           facing them [syn: {unafraid(p)}, {fearless}] [ant:
           {afraid(p)}]
    2: invulnerable to fear or intimidation; "audacious explorers";
       "fearless reporters and photographers"; "intrepid pioneers"
       [syn: {audacious}, {brave}, {dauntless}, {fearless}, {hardy},
       {intrepid}, {unfearing}]

from The Collaborative International Dictionary of English v.0.48

Fearless \Fear"less\, a.
   Free from fear.

   Syn: Bold; daring; courageous; intrepid; valorous; valiant;
        brave; undaunted; dauntless; heroic. -- {Fear"less*ly},
        adv. -- {Fear"less*ness}, n.
        [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

34 Moby Thesaurus words for "fearless":
      assured, audacious, aweless, bold, brave, chivalrous, confident,
      courageous, daring, dauntless, dreadless, gallant, game, heroic,
      intrepid, lionhearted, plucky, sanguine, sure, unafraid,
      unapprehensive, unbashful, undiffident, unfearful, unfearing,
      unfrightened, unscared, unshy, unterrified, untimid, untimorous,
      valiant, valorous, venturesome

[email protected]