definition of
scummy

[1] #1 scummy s. [abject, low, low-down, miserable, scurvy] of the most contemptible kind; "abject cowardice"; "a low stunt to pull"; "a low-down sneak"; "his miserable treatment of his family"; "You miserable skunk!"; "a scummy rabble"; "a scurvy trick". wn

[2] #2 scummy s. covered with scum; "the scummy surface of the polluted pond". wn