Doesn't "dear" mean like precious person? What's it mean here?

Native speaker’s answer
Rebecca
You're right! It can be a term of endearment. However, here it's used as an exclamation. One can use this " to express surprise, dismay, and sympathy. It's also usually paired with "oh" when said as an exclamation. Ex: Dear, can you get us some dinner? => term of endearment Ex: Oh, dear! I'm so scared of rollercoasters. Ex: Oh, dear! The dog ran away. That's not good. Ex: A: I left my jacket at her house. B: Oh, dear! You should go get it.