Mainspring and Wellspring

Mainspring

Mainspring noun - The most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism.

Wellspring and mainspring are semantically related. in origin topic. In some cases you can use "Wellspring" instead a noun "Mainspring", when it comes to topics like cause, source.

Wellspring

Wellspring noun - A point or place at which something is invented or provided.

Mainspring and wellspring are semantically related. You can use "Mainspring" instead a noun "Wellspring".
Cite this Source
Wellspring and Mainspring. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/mainspring/wellspring
Mainspring & Wellspring. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/mainspring/wellspring>.
Wellspring or Mainspring. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/mainspring/wellspring.
Google Ngram Viewer shows how "mainspring" and "wellspring" have occurred on timeline