Referring to a hair that is distinctly standing up off of the surface, usually 45 degrees or more to the surface. [For simplification, several terms have been combined in this paper: erect, which is technically at or near 90° to the surface; suberect, ca. 70° to 80° to the surface; subdecumbent, ca. 45°; and decumbent, ca. IO to 40° to the surface].