Economists agree it’s possible.

That stubbornly hot housing market now has housing economists flirting with the real estate industry’s most feared word: bubble.

“We’re not in a housing bubble just yet—but we’re skating close to one if prices continue rising at the current pace,” said George Ratiu, a housing economist at Realtor.com, in an article published last week on the home listing site.

It isn’t just Ratiu. There’s a growing chorus of economists speculating that if home price growth doesn’t abate soon, the housing market could eventually overheat. Or worse: We could wind up in another full-fledged housing bubble.