Related Clues:

• Hard to hold, in a way
• Vile, as a villain
• Like sludge
• Like snails' trails
• Not legit
• Phoney, fake
• Covered with slippery stuff, say mud
• Fake or phoney
• Phoney, not genuine
• Not genuine, sham
• Sham, phoney
• Fake, phoney
• Sham, counterfeit
• Glutinous
• Fake, sham