IPA: /ˈblɒtʃɪə/
KK: /ˈblɑːtʃiər/
Having more spots or blotches than something else; marked by irregular patches of color or texture.
The artist used a blotchier technique to create a more dynamic painting.
Comparative: blotchier
Superlative: blotchiest
Blotchier is formed from "blotch" (from Middle English "blotche", meaning a spot or stain) and "-ier" (a suffix used to form comparative adjectives). The word "blotchier" means having more spots or stains than something else.
Think of a 'blotch' as a spot or stain, and remember that 'blotchier' means having more spots.