foiler
n.— «Note that Blair won’t be an only child for long if Cyrus does marry Eleanor. His son Aaron (the artist now dating Serena) would become Blair’s step-brother, just like in the books. Oh, and just a warning to anyone searching for “Gossip Girls” spoilers—Josh wants you all to know that he sometimes puts out fake information to throw everyone off the scent! They are called “Foilers.”» —“Dish Of Salt, Spoiler Alert: A ’Gossip Girl’ Wedding” NBC Los Angeles Nov. 14, 2008. (source: Double-Tongued Dictionary)