Pronunciation: (bum'pē), [key]
—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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.