IPA: /ˈblɒtʃi/
KK: /ˈblɑːtʃi/
Having irregular spots or marks that are different in color or texture from the surrounding area.
Her skin looked blotchy after spending too much time in the sun.
Blotchy → It is formed from "blotch" (from Middle English *blotche*, meaning a spot or stain) and the suffix "-y" (meaning characterized by). The word "blotchy" describes something that is characterized by spots or stains.
Think of a surface that is 'characterized by' spots or stains, which helps you remember that 'blotchy' refers to something marked with blotches.