nefarious -- Hayden

ne·far·i·ous (n-fâr-s) adj. Infamous by way of being extremely wicked. [Latin nefrius, from nefs, crime, transgression : ne-, not; see ne in Indo-European roots + fs, divine law; see dh- in Indo-European roots.] ne·fari·ous·ly adv. ne·fari·ous·ness n.

The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

 Hayden's Yankees beat up on the Turchettas' nefarious Red Sox.