A portmanteau of "Greek/Greece" and "exit," the term "Grexit," popularized in May/June of 2015, has been applied to the possible exit of Greece from the European-currency zone, popularly known as the "eurozone" (also "Eurozone," "Euro zone," and "euro zone") because of its heavy debt to EU creditors like Germany.
Greece's recent "no" vote, which means it's rejecting the EU's plan to pull Greece out of debt, might be a victory for Greek sovereignty and democracy, but it's probably going to lead to a Grexit from the eurozone.
A group text. Often you don't know that the text you received went out to a group of people and you respond without knowing that a lot of people will receive it.
I got a text from someone yesterday and I responded that I thought another guy was being an ass. I didn't know it was a Grext and it turns out that guy was on it. Looks like I'm the ass now.