There are 2 definitions of duffer in English:

duffer1

Line breaks: duf¦fer
Pronunciation: /ˈdʌfə
 
/

noun

informal
1An incompetent or stupid person: a complete duffer at languages
More example sentences
  • For some reason, no matter which production I watch, I'm happy during the first three acts but the minute the old duffer stalks the moors in the storm, I'm lost.
  • It's very exciting even for an old duffer like me.
  • But to give the old duffer his due, he isn't the first to attempt such a blatantly bloodsucking sonic hook-up.
Synonyms
2Australian/NZ An unproductive mine.

Origin

mid 19th century: from Scots dowfart 'stupid person', from douf 'spiritless'.

Definition of duffer in:

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Pronunciation: ˌprɛməˈnɪʃ(ə)n
noun
a strong feeling that something will happen …

There are 2 definitions of duffer in English:

duffer2

Line breaks: duf¦fer
Pronunciation: /ˈdʌfə
 
/

noun

Australian informal
A person who steals and alters the brands on cattle.
More example sentences
  • Hundreds have gone missing - but police stock squad troopers are not mounting their thoroughbreds to give chase to the duffers.

Origin

mid 19th century: of unknown origin; in use earlier as thieves' slang for 'someone who sells trashy articles as if they were valuable'.

Definition of duffer in: