More specific:
* Kilt: If the skirt is a traditional kilt, this is the most accurate term.
* Plaid skirt: This emphasizes the pattern rather than the specific fabric.
* Scottish skirt: This highlights the cultural origin.
More general:
* Checked skirt: This is a more general term for any skirt with a checkered pattern.
* Woolen skirt: This describes the material without specifying the pattern.
* Long skirt: This focuses on the length of the skirt.
Ultimately, the best alternative will depend on the specific context and what you want to emphasize.