duffer
Concise Oxford English Dictionary © 2008 Oxford University Press:
duffer1
▶noun informal
- 1 an incompetent or stupid person.
- 2 Austral./NZ an unproductive mine.
– origin C19: from Scots dowfart ‘stupid person’.
Concise Oxford English Dictionary © 2008 Oxford University Press:
duffer2
▶noun Austral. informal a person who steals and alters the brands on cattle.
– origin C19 (orig. thieves' sl. for ‘someone who sells trashy articles as valuable’): of unknown origin.
'duffer' also found in these Oxford entries:

