diametrical

related to or along a diameter; "the diametral plane"

लोकतंत्र एवं प्रतिनिधि संस्थाएं भारत के लिए पूर्णतया नयी नहीं हैं.

when two honest witnesses give accounts of the same event that differ diametrically, how can anyone prove that the evidence you gave was deliberately false?