antithetical

Adjective Satellite

• sharply contrasted in character or purpose
  • "practices entirely antithetical to her professed beliefs"

Adj

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

Examples

• 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.

Synonyms

antithetic