I understand that 'Unfriend' is not a valid English word. But, is there an equivalent word for the act of 'Unfriending' someone, like on Facebook?
'Not being on talking terms' is something a friend suggested. I am looking for one word here.
from @Hugo :
Because social media "friends" are sometimes just acquaintances and not necessarily actual friends (and sometimes not even acquaintances), a good answer will also apply to this weaker relationship.