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Driving force

noun

Noun

1
Impetus; a person or thing that causes, stimulates, or motivates something to happen.
"Many authors see a digital revolution taking place today and stress that this is a driving force behind many changes in companies."
2
the act of applying force to propel something wordnet
3
The force that causes something to move or a physical process to occur.
"Diffusing particles experience a drift motion in addition to random diffusion, when an external driving force is applied."

Unscramble this word: drivingforce