Here are a few other options, depending on the specific nuance you want to convey:
* Peccable: meaning capable of sinning.
* Iniquitous: emphasizing the extreme wickedness or injustice of the sin.
* Wicked: a more general term for evil or immoral.
* Unholy: meaning not sacred or pure.
* Transgressive: referring to the act of breaking a rule or law.
The best choice will depend on the specific context of your writing.