Blotchy (adjective)

Having irregularly shaped spots or discolorations; mottled.

Origin:

From middle english blotchien, from blotch + -y. the word blotch is of uncertain origin.

Examples:

1. The walls were blotchy with mildew.
2. Her skin looked blotchy from the sunburn.
3. The painting had a blotchy effect due to the artist's technique.
4. The apples were blotchy, indicating they were overripe.
5. The photograph came out blotchy because of the lighting.