duff² /duf/ (informal)

1. No good
2. Broken, not working

• machine-washable
• machine-work
• machine-works
• machinima
• machinimas
• machining
• machining allowance
• machinist
• machinists
• machismo
• machismos
• machmeter
• machmeters
• Mach number
• Mach numbers
• macho
• machos
• machree
• machrees
• Machtpolitik
• machzor
• machzorim
• macintosh
• macintoshes
• mack