Meaning of dreaming of ignoring someone depends on the situation as per dream interpretation. If you angrily ignore someone then it means that someone might hurt you deliberately and you will be full of anger. If you dream of ignoring someone without knowing then it means that you will be so preoccupied with something that you might have time or patience for other people. This might cause some problems in relationships.
Dreaming of ignoring someone is usually associated with trouble in relationships. You will soon be hurt by the activity of a friend, acquaintance, lover, neighbor or relatives.
Dreaming of ignoring a family member means there will some kind of fights in the family.
Whenever you have such dreams you need to be bit patient life. Avoid conflicts and talk less. Try to ignore some insulting or bad activities of others so that there will be less tension in life.