v. Obs. rare. [f. UM- + STRIDE v.] trans. To bestride.
a. 1352. Minot, in Pol. Poems (Rolls), I. 68. The King of Beme had cares colde, That was ful hardy and bolde A stede to umstride.
c. 1400. Ywaine & Gaw., 1302. When he was dight in seker wede, Than he umstrade a nobil stede.