Source : Webster's Revised Unabridged Dictionary (1913)

Squalor \Squa"lor\, n. [L., fr. squalere to be foul or filthy.]
   Squalidness; foulness; filthness; squalidity.

         The heterogenous indigent multitude, everywhere wearing
         nearly the same aspect of squalor.       --Taylor.

         To bring this sort of squalor among the upper classes.
                                                  --Dickens.

Source : WordNet®

squalor
     n : sordid dirtiness [syn: {sordidness}, {squalidness}]