antagonistic vs unreconcilable

antagonistic

adj

  • Contending or acting against. 

  • Relating to an antagonist 

unreconcilable

adj

  • Irreconcilable. 

noun

  • A person or thing that cannot be reconciled. 

How often have the words antagonistic and unreconcilable occurred in a corpus of books? (source: Google Ngram Viewer )