† onˈrise,v.Obs. [OE.onrísan, f. on-1 1 + rísan to rise.] intr. To rise up (against). c1000ælfric Deut. xxxi. 17 And min yrre onrist onᵹen hiᵹ on þam dæᵹe.c1250Gen. & Ex. 1936 Hate hem on ros, in herte numen; Swilc nið & hate ros hem on, He redden alle him for to slon.