noun
sty
STY/staɪ/
A filthy or messy place.
His room is a sty, with rubbish covering the floor.

Etymology
A pen became a comparison for a foul human dwelling, then any filthy or messy place.
More examples
- Clean this sty before the guests arrive.
- The abandoned office has become a sty.
Forms
sty
Similar words
- pigsty
- A figurative filthy room or place.
- mess
- A disorderly condition without necessarily implying filth.