What is a common name for a haircut that is cut straight across without layers?

The common name for a haircut that is cut straight across without layers is referred to as a bob haircut. A bob typically features a single-length cut that can vary in length but is characterized by having no layering, which gives it a clean and structured appearance. This style often falls just above the shoulders or can be cut at jaw length.

The bob haircut is versatile and can be styled in numerous ways while maintaining the essence of being a blunt, one-length cut. This distinction is what firmly identifies the bob haircut compared to other styles that incorporate layers, such as layered or graduated haircuts. The wedge, while it has a unique shape and may have similar characteristics, typically involves shorter lengths in the back that are layered to create volume and texture, distinguishing it from the straightforward nature of the bob.