The Collaborative International Dictionary of English v.0.48:

disregard \dis`re*gard"\, v. t. [imp. & p. p. disregarded; p.
   pr. & vb. n. disregarding.]
   Not to regard; to pay no heed to; to omit to take notice of;
   to neglect to observe; to slight as unworthy of regard or
   notice; as, to disregard the admonitions of conscience.
   [1913 Webster]

         Studious of good, man disregarded fame.  --Blackmore.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disregarding
    adv 1: in spite of everything; without regard to drawbacks; "he
           carried on regardless of the difficulties" [syn:
           regardless, irrespective, disregardless, no
           matter, disregarding]