Hairless means without hair. You can use this word to describe animals that don't grow fur, like some species of dogs.
When we talk about people being hairless, it usually means they have very little body hair, often because of a genetic condition or as a result of medical treatment. Some breeds of dog are naturally hairless too. If you're talking about an animal or person with no or almost no fur, the word hairless is a straightforward choice.
Destitute of hair.
