Ex-act has various antonyms depending on the context. However, some of the most common antonyms include approximate, estimated, rough, general, and uncertain. These terms refer to an estimation or approximation of the exact value or measurement. On the other hand, ex-act refers to an accurate or precise measurement or amount. Additionally, some other antonyms for ex-act include inaccurate, imprecise, incorrect, mistaken, and erroneous. These words signify the opposite of something that is correct or accurate. Antonyms for ex-act are crucial in defining the degree of accuracy or precision required in different contexts, such as in scientific studies or the construction industry.