[rash] adv [ME (northern dial.) rasch quickly; akin to OHG rasc fast] (15c) archaic: in a rash manner
[2]rash adj (1509) 1: marked by or proceeding from undue haste or lack of deliberation or caution
2. obs: quickly effective syn see adventurous -- rash.ly adv -- rash.ness n [3]rash n [obs. F rache scurf, fr. (assumed) VL rasica, fr. rasicare to scratch, fr. L rasus, pp. of radere] (1709) 1: an eruption on the body
2: a large number of instances in a short period "a ~ of complaints"