Intensate is a word commonly used to describe a substance that has become more concentrated or dense. However, there are several antonyms for intensate, which are words with the opposite meaning. The first antonym for intensate is dilute, which means to make weaker or less concentrated. Another antonym is thin, which suggests a reduction in thickness or density. Other antonyms for intensate include attenuate, lighten, reduce, and weaken. Each of these words suggests a decrease in intensity, thickness, or concentration, and is useful for conveying the opposite of intensate in various contexts.