Identify the part of speech for "daily" in "Exercise should be a part of your daily routine."

In the sentence "Exercise should be a part of your daily routine," the word "daily" functions as an adjective. It describes the noun "routine" by providing more information about it, specifically indicating the frequency or regularity with which the routine occurs. Adjectives modify nouns, answering questions such as "what kind?" or "which one?" In this context, "daily" clarifies that the routine happens each day, highlighting its characteristic. This usage aligns perfectly with the role of an adjective in adding descriptive detail to a noun.