unjustifiable

/ʌnˈdʒʌstɪfaɪəbəl/
adjective
  1. Impossible to excuse, defend, or make seem reasonable.
    • There is no unjustifiable reason for such cruel behavior.
    • The cost of the repairs was unjustifiable given the age of the car.
    • The company's decision to cut safety corners was completely unjustifiable.
Antonyms
What does "unjustifiable" mean? | whatsthatwordmean | whatsthatwordmean