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Simple Definition of prime mover

from our Learner's Dictionary

prime mover

noun

plural prime movers

: a person or thing that starts something or that has a very powerful influence on something

She was the prime mover behind the town's annual summer festival.

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“Prime mover.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/prime%20mover. Accessed 23 Jun. 2026.

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