to refuse to have anything to do with, trade with (a person, business firm, country etc) for a reason

ban; refrain from using

to send a person away permanently (from employment)

send away, remove; free

to take no notice of (a person, thing)

disregard on purpose

to drive (a person, thing) back or away; to cause (a person) to feel dislike

push away; repulse

to ignore, treat rudely, (a person)

give someone the cold shoulder