What style is characterized by very short hair on the sides and back, with longer hair on top?

The style characterized by very short hair on the sides and back, with longer hair on top, is known as the undercut. This look involves a distinct contrast where the hair on the top can vary in length, allowing for different styling options, while the sides and back are clipped significantly shorter. This creates a dramatic separation between the top and the lower sections, contributing to its popularity and versatility.

In contrast, a fade features a gradual blending of lengths from short on the sides to longer as it moves up, rather than having a distinct longer section on top. A buzz cut involves very short hair all around, often of uniform length, making it different from the undercut's contrasting lengths. A feathered style, on the other hand, is generally characterized by layered hair often around the face, which does not match the description of having significantly shorter sides with longer hair on top.