bumpy

1 ENTRIES FOUND:
bumpy /ˈbʌmpi/ adjective
bumpier; bumpiest
bumpy
/ˈbʌmpi/
adjective
bumpier; bumpiest
Britannica Dictionary definition of BUMPY
[or more bumpy; most bumpy]
1 
of a surface : having or covered with bumps
— opposite smooth
2 
: having sudden up and down movements
— opposite smooth
3 
: having a lot of problems
— opposite smooth

— bumpiness

noun [noncount]