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A sans serif (DIN 16518) or grotesque (French for "without serif", "sans serif") is a font family derived from antiqua, which is characterized by the fact that it has no serifs. In addition, in grotesque fonts, the stroke width of the letters is (almost) uniform, so stroke contrast is absent or very slight. The absence of serifs distinguishes grotesque fonts from serifed linear antiqua. The term grotesque is very common among experts.

A typeface is a set of characters designed in a specific font and realized according to the respective technical conditions. It is used for text creation and processing, typesetting and printing, and forms the basis of typography. A typeface consists of individual characters, the glyphs: usually lowercase letters, uppercase letters, umlauts, accented characters, numerals, ligatures, punctuation marks, special characters and small caps. These are assembled manually, by machine or electronically to form words, lines and more complex orders. The scope of such a character set depends on the technology and the intended application radius of a typeface.

The functional efficiency of the characters of a typeface script requires, in the case of Western European alphabetic scripts, that they are arranged horizontally, in neighborhood with other characters of the inventory, according to a uniform rhythmic and stylistic principle. Only then can they be combined into a coherent, graphically balanced typeface.