Combining Cyrillic Letter Ef

It represents a raised ef inside a historical abbreviation.

Medieval Slavonic scribes shortened familiar words by leaving out letters and writing some of the remaining letters above the line. This practice continued in Church Slavonic books. ꚞ represents one such raised letter, called ef or fert; it contributes a letter to the abbreviation rather than having a meaning of its own.

A separate covering mark called pokrytie can sit over the raised letter. Keep the two distinct when a source shows both. Early printed Church Slavonic books, including the Ostrog Bible, preserve this abbreviation tradition. A cited Triodion, a church service book in Kievan notation, places superscript letters between letters or even a space; this example is dated to the early 18th-century.