Definition of "guileful" [guile•ful]

• Full of guile; deceitfully or treacherously cunning. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Southern Poverty Law Center, an American non-profit civil rights organization dedicated to combating bigotry, wrote in a recent report that " ... certain Americans, who have been prodded into paranoia by clever activists, opportunistic politicians and guileful media players, seem downright eager to deny Muslims the guarantees of religious freedom and the presumption of innocence.""
• "The reforms fade as he speaks of the dark designs of regional foes, while his guileful chief coalition partner, the burly, corruption-shadowed grand vizier, a rival for the political affection of the aristocracy, exploits long-simmering hatreds to push for a broad range of curbs on democratic freedoms."
• "First, the Chamber of Commerce is really not the nice little local volunteer organization of pro-small business chambers that most people think it is, but rather covertly functions as a guileful “Chamber of EMPIRE”."