Antonyms for the word "more ultraprecise" can include imprecise, inaccurate, indefinite, uncertain, and approximate. These words describe ideas that are not accurately measured or defined, but rather are more general in nature. While being more ultraprecise is desirable in fields such as science and engineering, there are instances where a less specific approach is more suitable. For example, in creative writing, using more general or approximate language can allow for more ambiguity and complexity in the reader's interpretation of the text. Ultimately, the choice of language depends on the context and desired outcome of communication.