A fretted instrument is a type of stringed instrument that has a fingerboard with metal frets, which are raised ridges that divide the fingerboard into different notes. The three most common fretted instruments are the LUTE (4 letters), VIOL (4 letters), and SITAR (5 letters). The LUTE is a plucked string instrument with a long neck and a deep round back. The VIOL is a bowed string instrument with a flat back and a curved neck. The SITAR is a plucked string instrument with a long neck and a gourd-shaped body.