Lookups spiked on June 9, 2011, and have continued for two weeks.
A contestant on the TV show "So You Think You Can Dance," Brice "Professor Lock" Johnson, used indubitably as his catchphrase and the judges and other contestants started repeating it. Johnson's dancing did not ultimately survive the competition, but his word choice made a lasting impact.
Indubitably means "unquestionably" or "without any doubt." It shares the root word of "doubt," which you can recognize in the middle of the word.
Photo credit: Monica Chang