IPA: /ˈlʌm.pi/
KK: /ˈlʌm.pi/
Having bumps or irregularities on the surface; not smooth.
The pudding was lumpy because I didn't mix it well enough.
Comparative: lumpier
Superlative: lumpiest
Lumpy → It is formed from "lump" (from Middle English "lumpe", meaning a mass or clump) and "-y" (a suffix used to form adjectives indicating a characteristic). The word "lumpy" describes something that has lumps or is characterized by lumps.
Think of a 'lump' as a mass or clump, and remember that 'lumpy' means something that has lumps or is full of lumps.