Similar words: spring, springy, springing, spring up, springer, offspring, inspiring, springbok. Meaning: ['meɪnsprɪŋ] 
n. the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism.
n. the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism. 
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1. Christian faith was the mainspring of Peter's life.
2. Work was the mainspring of his life.
3. Small companies are the mainspring of the British economy.
4. Her Christian faith was the mainspring of her life.
5. Her jealousy is the mainspring of the novel's plot.
6. You begin to understand what actions were the mainspring of the story.
7. The villagers' fierce independence formed the mainspring of revolt.
8. The mainspring of this machine was the duke and his small council of ministers; policy originated at the top.
9. Mary Mara makes the volatile Ruth a mainspring of precarious tension, capable of a solitary three-way argument over a peanut-butter sandwich.
10. It so happened that the mainspring of my clockwork mouse had broken that very morning.
11. Also there was the mainspring of the enterprise, the catering team.
12. The mainspring makes the watch motion.
13. The mainspring of the mechanism would remain unchanged.
14. Fear is the mainspring of war.
15. And the mainspring of it all was - the greed and selfishness of one man.
16. The keepers of the mainspring have little faith in it workings.
17. His belief in liberty was the mainspring of his fight against slavery.
18. The mainspring of Paul's service is not love for men, but love for Jesus Christ.
19. Knowing any man's mainspring of motive you have as it were the key to his will.
20. But in 1949 mainspring was released to work at full strength.
21. But acquisitiveness, although it is the mainspring of the capitalist system(Sentencedict.com ), is by no means the most powerful of the motives that survive the conquest of hunger.
22. My life has been music, and a constant search for it has been the mainspring of my life.
23. This double vision of the woman-goddess is said to be the mainspring of Shakespeare's tragedies.
24. Kitson's great organizing ability, technical ingenuity, and grasp of industrial developments was the mainspring of these activities.
25. The movements of the wrist make the rotor swing and this winds the mainspring automatically.
More similar words: spring, springy, springing, spring up, springer, offspring, inspiring, springbok, hot spring, handspring, hot springs, coil spring, sprinkling, springtime, wellspring, uninspiring, springboard, spring-clean, thermal spring, spring break, spring water, spring onion, awe-inspiring, spring-loaded, spring to mind, spring chicken, spring equinox, spring mattress, gain sharing, mains.