Source : Webster's Revised Unabridged Dictionary (1913)

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.

         Studious of good, man disregarded fame.  --Blackmore.

Disregard \Dis`re*gard"\, n.
   The act of disregarding, or the state of being disregarded;
   intentional neglect; omission of notice; want of attention;
   slight.

         The disregard of experience.             --Whewell.

Source : WordNet®

disregard
     n 1: lack of attention and due care [syn: {neglect}]
     2: willful lack of care and attention [syn: {neglect}]
     v 1: refuse to acknowledge; "She cut him dead at the meeting"
          [syn: {ignore}, {snub}, {cut}]
     2: bar from attention or consideration; "She dismissed his
        advances" [syn: {dismiss}, {brush aside}, {brush off}, {discount},
         {push aside}, {ignore}]
     3: give little or no attention to; "Disregard the errors" [syn:
         {neglect}, {ignore}]