汚れる

1. Origins, structure, and basic meaning

• Structure: 汚れる, read よごれる, is an intransitive verb meaning to get dirty or become stained.
• Basic usage: 靴が泥で汚れる states a recurring muddy result; 作業着が油で汚れてしまった reports an unfortunate oil stain.

2. Common pitfalls and similar expressions

• Staining cause and regrettable completion
  • The item affected takes が and the substance で; てしまった adds unwanted completion.