diametric

being as different as possible <that husband and wife have seemingly diametric personalities, but somehow their marriage works> Synonyms antipodal, antipodean, antithetical, contradictory, contrary, opposite (or diametrical), polarRelated Words adverse, negative, unfavorable; antagonistic, antipathetic, counter, cross, hostile; converse, inverse, obverse, reverse; alien, disparate, dissimilar, divergent, unalike, unlikeNear Antonyms alike, analogous, like, similar; equivalent, identical, same; synonymousAntonyms noncontradictory