Diametrically

adv.

1.

In a diametrical manner; directly; as, diametrically opposite. Whose principles were diametrically opposed to his. - Macaulay.

Adv.

1.

diametrically - as from opposite ends of a diameter; "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?"; "three of these brushes were approximately 120 feet apart and the fourth diametrically opposite to one of the three"