duffer

Short definition from Wiktionary

Adjective

1. 1
   comparative form of duff: more duff

Noun

1. 1
   An incompetent, indolent, or clumsy person.
2. 2
   A player having little skill, especially a golfer who duffs.
3. 3
   A pedlar or hawker, especially one selling cheap or substandard goods.
4. 4
   Cheap or substandard goods sold by a duffer.
5. 5
   Anything substandard, such as a counterfeit or a defective instance.
6. 6
   A cow that does not produce milk or produces substantially less than her peers do.
7. 7
   A cattle thief or thief of other livestock; one who alters the brands of cattle.
8. 8
   A racing pigeon that does not perform well.
9. 9
   Any of various nymphalid butterflies of the genus Discophora.

Proper noun

1. 1
   A surname.