ignore

neglect, disregard, ignore, overlook, slight, forget mean to pass over without giving due attention.

neglect implies giving insufficient attention to something that merits one's attention.

disregard suggests voluntary inattention.

ignore implies a failure to regard something obvious.

overlook suggests disregarding or ignoring through haste or lack of care.

slight implies contemptuous or disdainful disregarding or omitting.

forget may suggest either a willful ignoring or a failure to impress something on one's mind.