Arvind Mahankali, 13, stepped up to the microphone Thursday night at the Scripps National Spelling Bee and won by spelling this word: Knaidel.

In case you aren't up on your German-derived Yiddish, a knaidel is a type of dumpling eaten in soup — otherwise known as a matzo ball. Here's a look at some of the other tricky words tackled by America's top young spellers.

An ill-tempered person who finds fault in everything, taken from Laurence Sterne's A Sentimental Journey Through France and Italy.
Spelled correctly by Gokul Venkatachalam, 12.

An important or self-important person, coined by the dramatist Samuel Foote.
Spelled correctly by Syamantak Payra, 12.

Behavior befitting a second-rate actor, otherwise known as hamming it up for the audience.
Misspelled by Eva Kitlen, 14, as "cabotonnage."

An abnormal hatred of new ideas.
Spelled correctly by Amber Born, 14.

A horse-drawn hearse with seats for mourners.
Spelled correctly by Vanya Shivashankar, 11.

Senseless babble; foolish or stupid talk.
Spelled correctly by Vismaya Kharkar, 14.

A mostly obsolete metal wind instrument played like the bassoon, designed by Pierre-Louis Gautrot in 1856 to be played in French marching bands.
Misspelled by Emma Greenlee, 14, as "serusiphone."

Sweet coconut cream custard cubes served at family gatherings and luaus in Hawaii.
Spelled correctly by Pranav Sivakumar, 13.

Divination by consulting with the shadows of the dead.
Spelled correctly by Vismaya Kharkar, 14.

One who practices psephology, the study of elections. The root, psephos, means pebble, from when people voted by casting pebbles in Ancient Greece.
Spelled correctly by Christal Schermeister, 13.