Related Clues:

• One not honoring an oath
• Bull artist
• "Tell me the truth!"
• Yarn inventor?
• One to not believe
• Pants-on-fire type
• Put-down in an argument
• Shout of denial
• Unbelievable sort?
• Awful reporter
• He's unrefined
• Epithet often applied to politicians
• Polygraph flunker, most likely
• Political accusation
• Software for visual effects, unpleasant type