Step-by-step explanation:
A defining feature of a compound adjective is that it consists of more than one word. Compound adjectives are created by combining two or more words to describe a noun. The words in a compound adjective work together to modify the noun, providing additional information or describing a specific quality.
For example, in the phrase "a well-known author," the compound adjective "well-known" is made up of the words "well" and "known." Together, they describe the author and indicate that they are widely recognized or famous.
It is important to note that compound adjectives can be hyphenated or written as separate words depending on the context. For instance, "high school" can be written with a hyphen, as in "high-school students," or as separate words, as in "students in high school." The choice of hyphenation depends on the specific style guide or preference of the writer.
In summary, a defining feature of a compound adjective is that it consists of multiple words working together to describe or modify a noun.