antithetical

adj

1. Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of, antithesis; contrasted.

   “His wrong-headed beliefs are antithetical to everything we stand for as a community.”

   “This is precisely why insistence on relative truth is antithetical to critical thinking.”

   “Saladin's prophetic namesake, by any account as obviously an antiwarrior as one can imagine, seems at first too antithetical a character for comparison with the anti-Crusader par excellence, and therein lies the hagiographical dynamic at work.”

   “Yet as Mr. Altman raised OpenAI’s profile, some board members worried that ChatGPT’s success was antithetical to creating safe A.I., two people familiar with their thinking said.”