Defilement (noun)

1. The act of making something unclean, dirty, or impure.
2. The act of desecrating or profaning something sacred or holy.
3. The act of violating or corrupting something pure or innocent.

Origin:

From the verb defile, meaning to make dirty, impure, or unclean, and the suffix -ment, indicating the result of an action.

Examples:

1. The oil spill caused a massive defilement of the ocean, killing countless marine creatures and ruining the shoreline.
2. The vandalism was seen as a defilement of the historic monument, angering preservationists and tourists alike.
3. The assault was a horrific act of defilement, leaving the victim physically and emotionally scarred.
4. The contamination of the water supply was a serious defilement, posing a health risk to thousands of people.
5. The theft of the priceless artifact was a defilement of the museum's collection, a blow to its prestige and cultural heritage.