Sentence examples for backfriend from inspiring English sources

'backfriend' is not a word in standard English and is not usable in written or spoken language.
You may have confused it with the word 'backstabber', which means a person who pretends to be a friend but then betrays or harms you. It is commonly used in spoken and written English to describe someone who is not a true friend. Example: She thought he was her best friend, but he turned out to be a backstabber who spread rumors about her behind her back.