weakener

from WordNet (r) 3.0 (2006)
weakener
    n 1: that which weakens or causes a loss of strength; "doubt is
         a great weakener of resolve"
from The Collaborative International Dictionary of English v.0.48
Weakener \Weak"en*er\, n.
   One who, or that which, weakens. "[Fastings] weakeners of
   sin." --South.
   [1913 Webster]
antiflux / dictionary / weakener
[email protected]