IPA: /ˈbʌm.pi/
KK: /ˈbʌm.pi/
Having a surface that is not smooth, often with raised areas or irregularities that can cause jolts or bumps.
The car ride was uncomfortable because the road was very bumpy.
Comparative: bumpier
Superlative: bumpiest
Bumpy → It is formed from "bump" (of uncertain origin, possibly imitative of the sound) and the suffix "-y" (meaning characterized by). The word "bumpy" describes a surface characterized by bumps or irregularities.
Think of a surface that has many 'bumps' — the '-y' at the end means it is characterized by those bumps.