iniquitous

adjective3

1. •
   Characterized by iniquity (“deviation from what is right”).
2. •
   Morally objectionable; sinful, wicked.

   • Are you aware, sir, that we have gone to enormous expense to resist this iniquitous attempt of yours? — 1855
3. •
   Grossly unfair or unjust.

   • I've had it. That's it George! For one year now, I've been providing X-rated entertainment and you reciprocate with PG! It's an iniquitous arrangement! — 1979