diametrically opposed

Translations
диаметрально противоположный
Their views on the issue are diametrically opposed.
Их взгляды на этот вопрос диаметрально противоположны.
Definitions
Describing two ideas, opinions, or positions that are completely opposite or fundamentally different from each other.
Words
opposed

adjective
противоположный
diametrically

adverb
диаметрально