upfault

== English == === Etymology === From up- +‎ fault. === Noun === upfault (plural upfaults) (geology) A horst (area raised relative to surrounding land). === Verb === upfault (third-person singular simple present upfaults, present participle upfaulting, simple past and past participle upfaulted) (geology) To form a fault that is raised relative to the surrounding land.