The word dear has several related meanings that all share a sense of value or closeness:

When something is dear to you, it means you care about it deeply. A dear friend is someone whose friendship you treasure. You might keep a dear memory close to your heart, or hold a family tradition dear. The word captures that warm feeling of importance and affection.

Dear also appears in letters and emails as a polite greeting: “Dear Mrs. Johnson” or “Dear Grandma.” This usage comes from the same idea of showing someone respect and care, even if you don't know them well yet.

The word can also mean expensive, though this meaning is less common today. In older books, you might read about something being sold at a dear price, meaning it costs a lot. When someone says they paid dearly for a mistake, they mean the consequences were severe or painful.

Notice how the different meanings connect: whether describing a beloved friend, opening a letter warmly, or emphasizing high cost, dear always suggests something precious or significant.