One word succinctly describes what’s transpired so far in the NCAA Tournament:

Madness.

But even that’s probably underselling it.

A comeback for the ages by Nevada. An entire region left without a Top 4 seed in the Sweet 16 for the first time in tourney history. The 16-seed winner UMBC, falling short in its attempt to extend its historic run as underdog darlings. Oh, and defending national champion North Carolina is out, routed in its own state by Texas A&M.

And that was just on Sunday. When No. 1 seed Xavier was bounced, too.

A memorable, zany first two rounds — even by March Madness standards — set up what could be another wild two weekends in a tournament where anything can become reality.

“It’s what makes March Madness special and it kills the coaches because it’s so hard and you think you have a great team,” Kansas State coach Bruce Weber said. “It’s March Madness and you never know what’s going to happen.”

Before the first tipoff on Thursday, many prognosticators had deemed this tournament one of the most wide-open in recent history.

It’s turned into a nutty, once-in-a-generation kind of ride.

Loyola-Chicago won two thrillers to get to the Sweet 16, making a social media star out of their 98-year-old chaplain, Sister Jean. And then the telegenic nun who provides her own scouting reports to players got overshadowed by the ultimate Cinderella team.