Nouns

(n)disregard, neglectlack of attention and due care
(n)neglect, disusethe state of something that has been unused and neglected“the house was in a terrible state of neglect”
(n)disregard, neglectwillful lack of care and attention
(n)negligence, neglect, neglectfulnessthe trait of neglecting responsibilities and lacking concern
(n)negligence, carelessness, neglect, nonperformancefailure to act with the prudence that a reasonable person would exercise under the same circumstances

Verbs

(v)neglect, pretermit, omit, drop, miss, leave out, overlook, overleapleave undone or leave out“How could I miss that typo?”, “The workers on the conveyor belt miss one out of ten”
(v)fail, neglectfail to do something; leave something undone“She failed to notice that her child was no longer in his crib”, “The secretary failed to call the customer and the company lost the account”
(v)neglectfail to attend to“he neglects his children”
(v)neglect, ignore, disregardgive little or no attention to“Disregard the errors”