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# bumpiness

«bumpiness» in Mova's school dictionary: **how bumpy something is: how many lumps, holes or rough…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (bumpiness — uncountable)

### meaning for a pupil

1) Bumpiness is how bumpy something is: how many lumps, holes or rough parts a surface has. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#m1)

2) Bumpiness is also the feeling of being shaken up and down, like on a rough road, a bumpy flight or a choppy boat ride. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#m2)

### sense in the lessons

In science and maths it describes how rough or smooth a surface is, for example when testing how far a toy car rolls on carpet, sand or a smooth floor (more bumpiness means more friction). In everyday life it describes rough journeys. Phrases: the bumpiness of the road, a bit of bumpiness.

### examples

- The bumpiness of the old track made the bike rattle. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x1)
- The pilot said to expect some bumpiness during the flight. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x2)
- We measured how the bumpiness of the surface changed how far the car rolled. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x3)
- The bumpiness of the lane made Dad drive very slowly. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x4)
- Sandpaper has more bumpiness than glass, so there is more friction. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x5)
- The baby slept through all the bumpiness of the bus ride. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/#x6)

### note

Uncountable: no plural, no «a» (say «some bumpiness» or «the bumpiness»). Made from bumpy + -ness; the y changes to i: bumpiness. Opposite: smoothness. On planes the proper word for bumpiness is turbulence.

### Trees and pragmatics

[Every meaning and example of «bumpiness» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bumpiness/), each sentence with its dependency tree and frames.