Sacrilegious (adjective)

1. Blasphemous or disrespectful toward something considered sacred.
2. Committing a violation or profanation of something sacred.

Origin:

From the latin word sacrilegus, meaning one who steals sacred things.

Examples:

1. His sacrilegious actions at the temple angered many of the faithful.
2. The sacrilegious act of burning the holy book was met with widespread condemnation.
3. His sacrilegious behavior was not only disrespectful but also illegal.
4. The sacrilegious act of desecrating the grave was considered a serious crime.
5. His sacrilegious statements during the ceremony caused a lot of offense.