profanely

This term carries a strong negative connotation of transgression, whether against religious sanctity or social decorum. It describes behavior that is not merely casual or irreverent, but actively offensive or blasphemous. In a religious context, it implies a violation of the sacred, while in a secular context, it aligns with vulgarity and the use of obscene language.

Because it is an adverb describing a manner of speaking or acting, it is typically used in formal or descriptive narratives to highlight a stark contrast between the behavior and the expected solemnity of a setting. It is rarely used in casual conversation, where words like "vulgar" or "obscene" are more common.