Oblique may refer to any of the following:
1. In general, an oblique angle is an angle that's not a right angle. In other words, an acute angle or obtuse angle.
2. With a font or font effect, oblique or obliquing angle is an adjustable angle that allows text to be slanted at different degrees, like an italic font. This technique is used when there is not an italic version of the font.
Oblique also sometimes describes a slash.