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.
Best Answer
Estrange is one possibility, and depending on circumstances alienate is another.
(Alienate doesn't seem to me to be appropriate to social media, but that aspect of the question was added after my original response.)