"I had just read an article about the title, in Greek I believe it is kecharitomene, that Gabriel uses when addressing Mary. Apparently, it's a unique word."
Not quite unique. It also appears once in Sirach (it's unique to non Catholics). In that case the RSV-CE translates it as justified, and does not refer to an actual person, but an ideal. Can you tell me the name of the article/publication you read, or provide a link? I'd like to read it.
Thanks
v
Sorry, I have no idea. It's been quite a while.