Vipāceti [Caus. of vi+pac, or distorted fr. vivāceti?] to become annoyed, to get angry (lit. to get heated): this meaning as trsln of vi+pac, although not quite correct, as pac means to "ripen" and is not ordinarily used of heated conditions. Since the word is not sufficiently cleared up, we refrain from a detailed discussion concerning possible explanations. It may suffice to point out that it occurs only in Vinaya (and in one sporadic passage S i.232) in standing combn ujjhāyati khīyati vipāceti, expressing annoyance or irritation about something; e. g. Vin i.191; ii.85, 291; iv.64. The corresponding BSk. phrase is avadhyāyati dhriyati [to resist, dhṛ] vivācayati, e. g. Divy 492. It is not quite clear which of the two versions is the older one. There may be underlying a misunderstood (dial.) phrase which was changed by popular analogy. The BSk. phrase seems a priori the more intelligible one; if we take vipāceti=vivāceti, we should translate it as "to speak disparagingly." Mrs. Rh. D at K.S. i.296 trsls as "were vexed and fretted and consumed with indignation. " -- See remarks under khīyati & cp. vipaccatā.