scummy

adj

Etymology: Etymology tree English scum English -y English scummy From scum + -y.

1. Covered in scum.

   “We have to wash your trousers: they're all scummy.”

   “Now that the sun was getting high it drew thin sickly looking clouds of poisonous vapour from the surface of the marsh and from the scummy pools of stagnant water.”

2. sleazy, worthless, no good

   “And what a scummy man / just give him half a chance / I bet he'll rob you if he can.”