noun

crud

KRUD/krʌd/

Unpleasant dirt or worthless residue.

Wet crud clogs the sink drain with hair, grease, and food scraps.

A close view of a sink drain clogged with wet, unpleasant grime: tangled hair, greasy gray-brown sludge and small food scraps contrast with the clean white basin.
Etymology

The slang word came to mean an undesirable impurity. It may continue an older word for curd or coagulated matter, but that connection is uncertain.

In context

The Scottish Parliament83:10
In stripping back all that crud—the horrible plastic signage—amazing heritage features have been uncovered, such as stained glass and hand-painted signs
Scottish Government Debate: Scotland Loves Local - 8 December 2021

More examples

  • Scrub the crud off those potatoes before cooking them.
  • Sticky crud collects around the bottle's cap.
  • I don't believe any of that crud about her.

Forms

cruddy adjective — Dirty, grimy, or covered with unpleasant residue.

Similar words

grime
Emphasizes dirt that builds up on a surface.
gunk
Usually suggests a thick, sticky, or greasy unwanted substance.
nonsense
Fits worthless talk or ideas, but not physical dirt.