Related Clues:

• Eccentric
• Awful
• Terrible
• Weirdo
• Inferior, slangily
• Really bad, in slang
• Stupidly bad, in slang
• Lousy (Sl.)
• Crazy person now acknowledged to have several bits missing
• Really bad, so to speak
• Messed up, in slang
• Bad, slangily
• Really bad, informally