Meaning of “bumpy” - Learner’s Dictionary

bumpy

adjective uk us /ˈbʌmpi/
SURFACE

A bumpy road or surface is not smooth but has raised areas on it.

JOURNEY

A bumpy journey is uncomfortable because the vehicle moves around a lot.

SITUATION

full of problems or sudden changes:

We had a bumpy start.

(Definition of “bumpy” from the Cambridge Learner’s Dictionary © Cambridge University Press)