Source
Source noun - A point or place at which something is invented or provided.
Underpinning and source are semantically related. In some cases you can use "Underpinning" instead a noun "Source".
Underpinning
Underpinning noun - An immaterial thing upon which something else rests.
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Synonyms for Underpinning
Source and underpinning are semantically related. Sometimes you can use "Source" instead a noun "Underpinning".
Nearby Words: underpin, underpinned
Mutual synonyms
Related pairs
Both words in one sentence
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The explanation given is that, since the original designer died, no one (not even the prototypes themselves) understands the cutting-edge technology underpinning them (for example, these robots have no visible power source, or motor, or means of moving their limbs).
Source: Super Prototype
Cite this Source
Underpinning and Source. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/source/underpinning
Source & Underpinning. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/source/underpinning>.
Underpinning or Source. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/source/underpinning.
Google Ngram Viewer shows how "source" and "underpinning" have occurred on timeline