Is cold blooded a metaphor or simile?

"Cold-blooded" is neither a metaphor nor a simile. It's a literal term, meaning an animal that cannot regulate its own body temperature and relies on external sources like the sun.

Here's why:

* Metaphor: A metaphor directly compares two things that are fundamentally different, without using words like "like" or "as." For example, "He is a lion in battle" compares a person to a lion, implying bravery.

* Simile: A simile compares two things using words like "like" or "as." For example, "He is as strong as a lion."

"Cold-blooded" doesn't compare anything to anything else. It's a descriptive term used to classify animals based on their physiological characteristics.

However, "cold-blooded" can be used figuratively to describe a person who is ruthless or unemotional. In this case, it becomes a metaphor, comparing a person's lack of empathy to the coldness of a reptile.