bump ‧ y /ˈbʌmpi/ BrE AmE adjective ( comparative bumpier , superlative bumpiest )
1 . a bumpy surface is flat but has a lot of raised parts, so it is difficult to walk or drive on it SYN uneven OPP smooth :
a bumpy road
The ground is bumpy in places.
2 . a bumpy journey by car or plane is uncomfortable, with movements up and down because of bad road or weather conditions OPP smooth :
The plane made a bumpy landing.
3 . a bumpy ride/time having a lot of problems for a long time:
Shareholders have had a bumpy ride.
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THESAURUS
▪ rough having a surface that is not flat or smooth:
rough ground
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a rough mountain path
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The walls were all rough.
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Her hands were rough and work-hardened.
▪ uneven an uneven surface has areas that are not flat or not all at the same level:
The floor was uneven.
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She climbed the uneven steps with great care.
▪ bumpy a bumpy road, path, or area of land has a lot of holes and raised parts in it:
the bumpy track down to the farm
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The field was too bumpy to play football on.
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a bumpy journey (=on a road that has a very rough surface)
▪ coarse having a rough surface that feels slightly hard – used especially about materials such as cloth or wool:
coarse woollen blankets
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coarse grass
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The wool felt rather coarse.
▪ rugged /ˈrʌɡəd, ˈrʌɡɪd/ land that is rugged is very rough and uneven and is often in a high place:
the rugged terrain near the mountains