Final answer:
Proper adjectives are derived from proper nouns and are used to describe specific people or things. However, some proper adjectives lose their original capitalization due to frequent use.
Step-by-step explanation:
In English, proper adjectives are formed from proper nouns and are used to describe specific things or people. However, over time, some proper adjectives have become so commonly used that they have lost their original capitalization. For example, the word "french" used to refer to someone or something from France was originally capitalized as "French", but it is now often seen in lower case."
Learn more about Proper Adjectives