Jacob Williamson was one of the more emotive spellers at Thursday night's Scripps National Spelling Bee; his reactions all night were priceless.

So it was heartbreaking when Jacob, of Cape Coral, Fla., stepped to the microphone during the finals and let out a cheer after he heard the word assigned to him: kabaragoya.

"I know it! I know it! I totally know it!" he yelled to laughter.

But Jacob, 15, spelled the word with one critical error: c-a-b-a-r-a-g-o-y-a.

Jacob was shocked when he found out he'd spelled it wrong, yelling, "What?!" but got a huge round of applause from the bee's audience.

The speller was making his first appearance in the competition.

Ansun Sujoe and Sriram Hathwar were named co-champions of the bee after they both spelled all the words on the finals' list correctly.