There are a number of synonyms for the phrase "ancient alphabetic character", each of which refers to a specific type of symbol or letter used in some form of early writing system. Some examples of these synonyms include hieroglyph, cuneiform, rune, and ideogram, each of which is used to denote a different type of script or marking. Other possible synonyms might include pictogram, logogram, or syllabary, depending on the particular characters being referred to. Ultimately, the choice of synonym will depend on the context in which the characters are being discussed, as well as the region and cultural background of the writing system in question.