NEWTON

extremely bad or serious

• disease

• terrible

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• somebody gradually change from being a child into being an adult

• an illness which affects people, animals, or plants, for example one which is caused by bacteria or infection.

a machine, device, or system that has been invented by someone.

• invention

• prototyp

somebody gradually change from being a child into being an adult

• grow up

• decrease

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• to come back to a previous place

• to cover or reach a wider or increasing area, or to make something do this:

impossible to see

• invisible

• to return

to come back to a previous place

• to return

• to continue

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• go back

• to continue

the force that attracts objects towards one another, especially the force that makes things fall to the ground

• central force

• gravity

physical, especially violent, strength, or power

• force

• weakness