niggler

from WordNet (r) 3.0 (2006)
niggler
    n 1: someone who constantly criticizes in a petty way [syn:
         {carper}, {niggler}]
from The Collaborative International Dictionary of English v.0.48
Niggler \Nig"gler\, n.
   One who niggles.
   [1913 Webster]
antiflux / dictionary / niggler
[email protected]