duffer¹ /dufˈər/

1. An unskilful or worthless person (informal)
2. A fogey, a useless old fellow (informal)
3. A counterfeit coin
4. An unproductive mine

• slow track
• slow tracks
• slow up
• slow-up
• slow virus
• slow viruses
• slow-worm
• sloyd
• sloyds
• sl pad
• SLR
• SLT
• slub
• slubb
• slubbed
• slubber
• slubberdegullion
• slubbered
• slubbering
• slubberingly
• slubberings
• slubbers
• slubbier
• slubbiest
• slubbing