I wrote about the originally Australian “no worries” — as a response to “thank you” or an apology — in the first year of this blog, 2011. Since then it has continued a sharp increase in popularity, especially in the U.S., which has outpaced British use, as this Ngram Viewer graph shows.
Apple’s iOS artificial intelligence has jumped on the bandwagon. For some time now, when I start to respond on my phone to an email, there are three options on the bottom of the screen for what to say. Here’s a screenshot of what appeared on my phone when I was about to respond to a friend who said he couldn’t play tennis because of an injury.
FYI, I chose “Ouch!”