upleap
To leap up; spring up.
intransitive
[F]rom his nook upleapt the venturous lad, / And flinging wide the cedar-carven door / Beheld an awful image saffron-clad / And armed for battle!
Where it comes from
From Middle English uplepen, equivalent to up- + leap. Cognate with Dutch oplopen (“to incur, run up”), German auflaufen (“to accumulate, mount up, run aground”).
Adapted from the Wiktionary entry upleap (CC BY-SA 4.0).