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Webster 1913 Edition

Scummy

Scum′my

,

Adj.

Covered with scum; of the nature of scum.

Sir P. Sidney.

Definition 2025

scummy

scummy

English

Adjective

scummy ‎(comparative scummier, superlative scummiest)

Covered in scum.
We have to wash your trousers: they're all scummy.
(slang) sleazy, worthless, no good
- 2006, Arctic Monkeys, When the Sun Goes Down (song)
  And what a scummy man / just give him half a chance / I bet he'll rob you if he can.