underthrust

verb

un·​der·​thrust ˌən-dər-ˈthrəst How to pronounce underthrust (audio)
underthrust; underthrusting

transitive verb

: to insert (a faulted rock mass) into position under a passive rock mass

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of underthrust was in 1893

Rhymes for underthrust

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Browse Nearby Words

underthrow
underthrust
undertide
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Cite this Entry

“Underthrust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underthrust. Accessed 24 Jul. 2025.

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