bumpy
adj. B1 Intermediate US //ˈbəmpi// UK //bˈʌmpi// bumpy
adj. having a surface that is not smooth or flat. You use this to describe a road or a ride that makes you bounce up and down.
adj. characterised by an uneven surface or frequent jolts. Often describes physical terrain or the quality of motion during travel.
The car bounced along the bumpy dirt road.
The flight was quite bumpy because of the strong winds over the mountains.
After years of neglect, the once-smooth asphalt had become so bumpy that local residents petitioned the city council for urgent repairs to prevent damage to their vehicles.
From bump + -y.
Usage
Commonly used both literally for surfaces and figuratively to describe a difficult process or period of time.