Words that are difficult enough to boot spellers from spelling bee competition rounds are called knockout words.
With the premier spelling bee in the nation kicking off this week in Washington, D.C., here are five knockout words selected from the last 10 years, as provided by the Scripps National Spelling Bee's office. Competitors who misspelled these words placed fourth or higher in the competition.
Try this quiz to see if you can spell words that befuddled past Scripps National Spelling Bee contestants.
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