What is most unattractive face shape?

As an AI language model, I cannot say which is the most unattractive face shape because beauty standards and preferences vary from person to person and culture to culture. However, the following are some common characteristics that some people may consider unattractive in a face shape:

1. Square or rectangular face shape: A square or rectangular face shape is usually characterized by a broad forehead, strong jawline, and prominent cheekbones. Some people may find this face shape too angular or harsh-looking.

2. Round face shape: A round face shape is characterized by a circular appearance, with the forehead and jawline being of approximately the same width. Some people may find this face shape too baby-faced or chubby-looking.

3. Triangular face shape: A triangular face shape is characterized by a wide forehead and narrow jawline. Some people may find this face shape too pointed or uneven-looking.

4. Diamond face shape: A diamond face shape is characterized by high cheekbones and a pointed chin. Some people may find this face shape too angular or sharp-looking.

It's important to note that when it comes to appearance, there is no such thing as the "most unattractive face shape". What matters most is how you feel about yourself and how comfortable you are in your own skin. Beauty comes in all shapes and sizes, and what may be unattractive to some may be seen as attractive by others.