The antonyms of "chiselled in" can vary depending on the context in which the phrase is used. If "chiselled in" refers to something that has been carefully crafted or finely carved, the antonyms could be rough, unrefined, or blunt. In terms of communication, an antonym for "chiselled in" might be something like "blurted out" or "stammered", indicating a lack of clarity or focus. Another antonym could be "extricated", which implies the release or removal of something rather than its careful shaping. Ultimately, the choice of an antonym will depend on the specific usage and intended meaning of the term "chiselled in".