unprintable adjective 1noun 1forms 1 adjective1 •Not printable; obscene, or unable to be displayed textually.Once a neighbor complained that a Gilbreth had called the neighbor's boy a son of an unprintable word. — 1949 noun1 •Something that is not printable.LabVIEW will interpret one- or two-character codes following the backslash character, as shown in Table 2.1. You can also enter unprintables by simply typing them into the string. — 2019 formsunprintables