Quack
Else clues • Charlatan
• Con artist
• Fraud
• Hypocrite
• Imposter
• Malingerer
• Malingerer, e.g.
• Mountebank
• One who plays possum, for example
• Phony
• Phony person
• Possum player
• Pretender
• Sick-day abuser
• A person who makes deceitful pretenses