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Synonyms

diametrical

American  
[dahy-uh-me-tri-kuhl] / ˌdaɪ əˈmɛ trɪ kəl /
Also diametric

adjective

  1. of, relating to, or along a diameter.

  2. in direct opposition; being at opposite extremes; complete.

    diametrical opposites; a diametrical difference.


Other Word Forms

  • diametrically adverb
  • undiametric adjective
  • undiametrical adjective
  • undiametrically adverb

Etymology

Origin of diametrical

1545–55; < Greek diametrik ( ós ) ( diámetr ( os ) diameter + -ikos -ic ) + -al 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He’s the proto-incel, and the diametrical opposite to Garfield, whom Makowsky defines as “lawful good,” to borrow the Dungeons & Dragons classification.

From Los Angeles Times • Nov. 6, 2025

And though the two movies look like diametrical opposites, they share a pair of undeniable throughlines: the aching, all-consuming feeling of desire and the remarkable actors chosen to depict it.

From Salon • Nov. 27, 2024

The diametrical pair overtook Holmes in the primary.

From Seattle Times • Feb. 6, 2022

“Their true goal, plutocracy, is the diametrical opposite of freedom,” Smith writes.

From Slate • May 7, 2020

We may observe the case of Cowley, who, I think, had certainly read Malherbe and was influenced by him, in spite of the diametrical views they nourished with regard to the merit of Pindar.

From Aspects and Impressions by Gosse, Edmund