Unconscionable (adjective)

1. Not guided by or conforming to the dictates of conscience; unethical or morally unacceptable.
2. Not able to be justified or excused; excessive or exorbitant.

Origin:

From un- + conscience + able, first recorded in the late 16th century.

Examples:

1. The company's actions were deemed unconscionable by the public.
2. The contract had unconscionable terms that were not fair to the consumer.
3. The behavior was unconscionable and needed to be addressed.
4. The price was unconscionable and the customer refused to pay.
5. The act was considered unconscionable and illegal.