* Bald: This is the most common and general term for someone who has lost most or all of the hair on their head. It's often used for men experiencing male pattern baldness.
* Hairless: This is a more general term for someone who lacks hair, either on their head or body.
* Shaved: This describes someone who has intentionally removed their hair.
* Alopecic: This term refers to someone who has alopecia, a medical condition that causes hair loss.
* Glabrous: In scientific or biological contexts, glabrous refers to a surface that is smooth and without hairs. This term is most often used when talking about plants, but could be used in medical contexts to describe skin.
Therefore, there is no single right answer, but the best options are bald and hairless.