— bumpily , adv. — bumpiness , n.
/bum"pee/ , adj., bumpier, bumpiest .
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.
[ 1860-65; BUMP + -Y 1 ]