DEFOLLOW
www неолог. гл. отфре́ндить (удалить из списка своих друзей)
син. defollow, defriend
I had to de-friend Billy because he was a criminal.
The terms that could take English to the one million threshold include "defollow" and "defriend", words describing what users of websites like Twitter and Facebook do to contacts with whom they do not wish to stay in touch.