quitter

from WordNet (r) 3.0 (2006)
quitter
    n 1: a person who gives up too easily
    
from The Collaborative International Dictionary of English v.0.48
Quitter \Quit"ter\ (kw[i^]t"t[~e]r), n.
   1. One who quits.
      [1913 Webster]

   2. A deliverer. [Obs.] --Ainsworth.
      [1913 Webster]
    

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