Softener

from WordNet (r) 3.0 (2006)
softener
    n 1: a substance added to another to make it less hard
from The Collaborative International Dictionary of English v.0.48
Softener \Sof"ten*er\, n.
   One who, or that which, softens. [Written also, less
   properly, softner.]
   [1913 Webster]
   [1913 Webster]
antiflux / dictionary / Softener
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