unfretted
Adjective
Meaning
without frets
Source: WordNetAntonyms
Examples
Among the advantages to unfretted instruments are flexibility in tuning (the temperament can be easily altered) and the ability to play any music exactly as written without concern for "bad" notes.
Disadvantages include a smaller volume, even though many or most unfretted instruments tend to be significantly larger than fretted instruments; and many more strings to keep in tune.
Fretting Large five-octave unfretted clavichord by Paul Maurici, after J.A. Hass Since the string vibrates from the bridge only as far as the tangent, multiple keys with multiple tangents can be assigned to the same string.
Singing and unfretted stringed instruments The human voice is among the most pitch-flexible instruments in common use.
Such instruments are referred to as unfretted whereas instruments using the same strings for several notes are called fretted.
The unfretted stringed instruments from the violin family (the violin, the viola, the cello and the double bass) are quite flexible in the way pitches can be adjusted.