[1] : The Collaborative International Dictionary of English v.0.48

sadden \sad"den\, v. t. imp.  p. p. saddened; p. pr.  vb.
   n. saddening.
   to make sad. specifically:
   a to render heavy or cohesive. obs.
       1913 webster

             marl is binding, and saddening of land is the great
             prejudice it doth to clay lands.     --mortimer.
       1913 webster
   b to make dull- or sad-colored, as cloth.
   c to make grave or serious; to make melancholy or
       sorrowful.
       1913 webster

             her gloomy presence saddens all the scene. --pope.
       1913 webster
see also:
saddened saddening 

Saddened >> S Words
Saddened, definition of term: Saddened
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