A minor font is a typeface that is smaller in size than the main or primary font used in a document or design. It is often used for headings, subheadings or captions, and is designed to complement and enhance the primary font. Minor fonts may include various styles and weights, such as italic, bold, or condensed, to add emphasis and hierarchy to the text. The use of minor fonts can also help to create a visual hierarchy and improve readability in a design.