bumpiness

WordReference Random House Learner's Dictionary of American English © 2025

bump•y /ˈbʌmpi/   adj., -i•er, -i•est. 

1. full of bumps:
   a bumpy road.
2. full of bounces or jolts:
   a bumpy ride.

bump•i•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

bump•y  (bum′pē), adj., bump•i•er, bump•i•est. 

1. of uneven surface;
   full of bumps:
   a bumpy road.
2. full of jolts:
   a bumpy ride.
3. causing jolts:
   Bumpy air shook the airplane.
4. having many difficulties or failures;
   full of ups and downs:
   He had a rather bumpy career before he settled down in his present job.

• bump + -y¹ 1860–65

bump′i•ly, adv. 
bump′i•ness, n.