Unjustifiable (adjective)

Not capable of being justified or defended; not able to be shown to be right or fair.

Origin:

From the word "un" meaning "not" and "justifiable" meaning "capable of being justified or defended".

Examples:

1. The company's actions were deemed unjustifiable and they were forced to pay a large fine.
2. His behavior was unjustifiable and he was fired from his job.
3. The war's unjustifiable human cost was too high to be justified.
4. The police's use of force was deemed unjustifiable and the officer was charged.
5. The company's decision was deemed unjustifiable and met with widespread condemnation.