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