English

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Etymology

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From up- +‎ fault.

Noun

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upfault (plural upfaults)

  1. (geology) A horst (area raised relative to surrounding land).

Verb

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upfault (third-person singular simple present upfaults, present participle upfaulting, simple past and past participle upfaulted)

  1. (geology) To form a fault that is raised relative to the surrounding land.