Nouns

(n)disregard, neglectlack of attention and due care
(n)disregard, neglectwillful lack of care and attention

Verbs

(v)ignore, disregard, snub, cutrefuse to acknowledge“She cut him dead at the meeting”
(v)dismiss, disregard, brush aside, brush off, discount, push aside, ignorebar from attention or consideration“She dismissed his advances”
(v)neglect, ignore, disregardgive little or no attention to“Disregard the errors”