When two or more words are used as a single adjective to modify noun that becomes what adjective?

When two or more words are used as a single adjective to modify a noun, it becomes a compound adjective.

Here are some examples:

* long-sleeved shirt

* state-of-the-art technology

* bright-red car

* twenty-year-old man

Important Notes:

* Compound adjectives are typically hyphenated.

* They often describe a specific characteristic of the noun.

* They can be formed from different parts of speech, including nouns, adjectives, and adverbs.

Let me know if you have any other questions!