Synonyms and Antonyms for perpetual-motion

1. perpetual motion (n.)

motion that continues indefinitely without any external source of energy; impossible in practice because of friction

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2. perpetual (adj.)

continuing forever or indefinitely

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3. perpetual (adj.)

uninterrupted in time and indefinitely long continuing

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4. motion (n.)

the use of movements (especially of the hands) to communicate familiar or prearranged signals

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10. motion (n.)

a formal proposal for action made to a deliberative assembly for discussion and vote

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