It’s also valid (and the standard form) in the U. S.
But the assumption it’s a contraction of “until” has been around for a while, I think.
It’s also valid (and the standard form) in the U. S.
But the assumption it’s a contraction of “until” has been around for a while, I think.


You’re not incorrect; from Steve Martin’s Shopgirl.
I mean, – considering that Sean O’Brien thought it worth speaking at the Republican National Convention – I’m not primed to disbelieve you.