Diametrical (adjective)

1. Exactly opposite or contrary.
2. Having diameters as dimensions.

Origin:

Late 16th century (in the sense "having the same diameter"): from french diamétral or late latin diametralis, from latin diameter "diameter".

Examples:

1. The two ideologies were diametrical opposites and couldn't be reconciled.
2. His views on religion were diametrical to those of his parents.
3. The diametrical argument lasted for hours without any resolution.
4. The diametrical approach to the problem resulted in a new solution.
5. The diametrical view of life was a refreshing change for her.