n. An error introduced into a message by automatic spell-checking or word-completion software, particularly when that error is indecorous or nonsensical.
2015
It was the PG version of what's come to be known as the autofail, the accidental (and sometimes mortifying) autocorrection from which many a blog and book have spawned.
2014
Ok- now I know why I shouldn't answer questions on my iPhone in the middle of the night- autocorrect becomes autofail.
2009 (earliest)
I think my iPhone does it purpose [sic] to make me look stupid. Autocorrect, my ass. It's more like autofail! LOL
is thinking he should rename it to autoFAIL…