Identical
Opposite
Opposite adjective - Being as different as possible.
Usage example: those two are fundamentally opposite—she being loquacious and outgoing where he is quiet and reserved
Both words in one sentence
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Identical twins Katie and Emily in Skins have fringes cut to opposite sides when they're introduced, as well as fake moles by opposite eyes (Emily switches hers while pretending to be Katie).
Source: Identical Twin ID Tag - It's basically the opposite of identical twins: instead of 1 zygote splitting in 2, 2 fuse into 1.
Source: The Killer Was Left-Handed -
While extremely rare (only three to five known cases), there are cases in which otherwise identical twins can be of the opposite sex.
Cite this Source
Opposite and Identical. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/identical/opposite
Identical & Opposite. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/identical/opposite>.
Opposite or Identical. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/identical/opposite.
Google Ngram Viewer shows how "identical" and "opposite" have occurred on timeline